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Sample records for nagae sagitta decipiens

  1. Filicium decipiens

    Indian Academy of Sciences (India)

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    Filicium decipiens (Wt. & Arn.) Thwaitesex. Hook.f. º. (Fern-leaftree) of Sapindaceaeisa handsome middle- º 2. º sized evergreen native tree with adense, often shapely crown. Leaves are alternate, pinnmately compound with a conspicuous leafy wing that runs along the entire length of the rachis. Flowers are small, white ...

  2. CONTINUING FACTION AMONG NAGAS

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    Subramaniam Kannan

    2016-05-01

    Full Text Available Factions are the competition between groups for scarce resources or power. It manifests in many forms and is noticed in all parts of the world. However, factions also emerge because of certain vulnerable situations and issues that are found at different levels of social organisation. The fundamental assumption in the present study is that factions at different levels do not constitute independent and insulated phenomena. There are always certain linkages between their functioning at various levels, such as the village, block, district and the state. Against this background the present study made an attempt to observe factions at the village, block and district levels and establish organic or otherwise links between factions at these levels. The study carried out in Dimapur district of Nagaland, where there is a clash between two tribal groups. The rationale implicit in the study is, therefore, that the leadership of various political parties at the grass root level interacts with the leadership of these various tribal groups at the district level and state level through the dynamics of factional process. To collect in-depth information on factions among Nagas informal interviews were conducted among the elders at village level and tribal organizations at district level. The study also understands various specific issues, which constitute the back drop for various factions, i.e., those issues by which the faction-groups maintain identity. The origin of faction among the Nagas starts from the freedom struggle of Nagas from India. However recently the problems happened in the state head quarters (Kohima it reflects in the district head quarters and in the Sumi dominated villages. The study concludes that strong political ground among the tribal organisation is the major causes of the faction. Finally, the author suggesting that government should maintain the effective communication with the tribal group leaders and various tribal organisations and

  3. HM Sagittae as a young planetary nebula

    International Nuclear Information System (INIS)

    Kwok, S.; Purton, C.R.

    1979-01-01

    HM Sagittae is suggested to be a very young planetary nebula recently transformed from a red-giant star through continuous mass loss. The observational data for HM Sge have been analyzed in terms of the interacting stellar wind model of planetary nebula formation. The model is in accord with virtually all the spectral data available--radio, optical, and infrared--as well as with the remarkable brightening of HM Sge observed in 1975. In particular, all three gaseous components predicted by the model are observed in the optical spectrum. The density in the newly formed shell is found to be at least 5 x 10 7 cm -3 , a value considerably higher than that found by the conventional analysis, which assumes a single-component homogeneous nebula. The radio spectrum is dominated by free-free emission from the remnant red-giant wind. The infrared spectrum suggests the presence of two dust components, one consisting of silicate grains left over from the red-giant stage and the other of grains newly formed after the 1975 brightening. The low observed shell mass is consistent with the interacting stellar wind model but is not consistent with the conventional sudden-ejection model of planetary nebula formation

  4. Parasites of African Mourning Dove ( Streptopelia decipiens ) and ...

    African Journals Online (AJOL)

    The African Mourning Dove (Streptopelia decipiens), also called the Mourning Collared Dove is a pigeon that is predominantly distributed in Sub-Sahara Africa. Their interaction with man and other domestic and wild birds portends it as a potential carrier of zoonotic parasites but there is paucity of information on the ...

  5. THE MYTHOLOGY OF KAMPUNG NAGA COMMUNITY

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    Wahyu Iryana

    2014-12-01

    Full Text Available In order to gain understanding of the meaning of symbolic variants of the myth in Kampung Naga, an objective analysis is required. Therefore, this paper applied the linguistic model study offered by Levi-Strauss as a new step for the objectivity of myth interpretation. The basic assumption of Levi-Strauss’ linguistic model is that myth often display a diverse surface structure, but in fact the diversity is the description of the human deep structure. The selection of this myth was solely based on the life of the Kampung Naga community as part of Sundanese Society. The results indicated that the myth in the religious life of the Kampung Naga community contains a various stories which include the revelation, the reincarnation, and the descent of revelation. These episodes can be constructed into the structure of a Levi-Strauss linguistic model, a binary opposition, namely the mandate giver (active the mandate recipient (passive. The relationship between the giver and the receiver is vertical (structural called “structure of three” (regular. From the “structure of three”, the “culinary triangle” can be constructed. From the “combined triangle”, the Batara Guru will also appear to become a central event that other figures have to go through. Finally, it can be stated that the deep structure construction that still refers to the aspect of Javanese cosmology in General.

  6. EPR study of sagitta otoliths of Sciaenidae fish

    Energy Technology Data Exchange (ETDEWEB)

    Beneditto, Ana Paula Madeira di; Franco, Roberto Weider de Assis [Universidade Estadual do Norte Fluminense (UENF), RJ (Brazil)

    2011-07-01

    Full text. Otoliths are crystalline structures of calcium carbonate (CaCO{sub 3}) located in the inner ear of bone fish that are responsible for balance maintenance in the water column and sense of direction. The bio mineralization of these structures occurs during the fish development; when the otolith growth layers are formed. In this work, electron paramagnetic resonance (EPR) spectroscopy is applied to study the sagitta otoliths via manganese (Mn{sup 2+}) spectra, since in calcium carbonates the Mn{sup 2+} ion is a natural substitutional impurity at Ca{sup 2+} sites. The sagitta otoliths of the Sciaenidae fish Paralonchurus brasiliensis, commonly known as cabeca dura (47 samples), and Stellifer rastrifer, known as cangoa (22 samples), were obtained from specimens captured in coastal areas of Rio de Janeiro State, southeastern Brazil: Atafona (21 deg 37'S), Farol de Sao Tome (22 deg 05'S) and Rio das Ostras (22 deg 30'S). EPR spectra of sagitta otoliths were obtained in X-band (9GHz) at room temperature. The EPR spectra are typical of Mn{sup 2+} in aragonite powder, associated to an occupation of Ca{sup 2+} site with nine nearest neighbor oxygen atoms. It is well established in the literature that the otolith core is constituted by calcite, which is covered by aragonite during the fish growth. However, otoliths of younger fishes showed similar EPR spectra when compared to the older ones, indicating that aragonite is the main bio mineral structure in both maturity stages. In a previous work, these two Sciaenidae species presented significant differences in sagitta otoliths shape, which were related to environmental differences (e.g. water temperature, nutrients, depth) among the sampling sites (Atafona, Farol de Sao Tome and Rio das Ostras). Meanwhile, we do not observed differences in the EPR spectra, indicating that the aragonite crystallization process and the occupation of manganese are not related with the environment where these fish species

  7. EPR study of sagitta otoliths of Sciaenidae fish

    International Nuclear Information System (INIS)

    Beneditto, Ana Paula Madeira di; Franco, Roberto Weider de Assis

    2011-01-01

    Full text. Otoliths are crystalline structures of calcium carbonate (CaCO 3 ) located in the inner ear of bone fish that are responsible for balance maintenance in the water column and sense of direction. The bio mineralization of these structures occurs during the fish development; when the otolith growth layers are formed. In this work, electron paramagnetic resonance (EPR) spectroscopy is applied to study the sagitta otoliths via manganese (Mn 2+ ) spectra, since in calcium carbonates the Mn 2+ ion is a natural substitutional impurity at Ca 2+ sites. The sagitta otoliths of the Sciaenidae fish Paralonchurus brasiliensis, commonly known as cabeca dura (47 samples), and Stellifer rastrifer, known as cangoa (22 samples), were obtained from specimens captured in coastal areas of Rio de Janeiro State, southeastern Brazil: Atafona (21 deg 37'S), Farol de Sao Tome (22 deg 05'S) and Rio das Ostras (22 deg 30'S). EPR spectra of sagitta otoliths were obtained in X-band (9GHz) at room temperature. The EPR spectra are typical of Mn 2+ in aragonite powder, associated to an occupation of Ca 2+ site with nine nearest neighbor oxygen atoms. It is well established in the literature that the otolith core is constituted by calcite, which is covered by aragonite during the fish growth. However, otoliths of younger fishes showed similar EPR spectra when compared to the older ones, indicating that aragonite is the main bio mineral structure in both maturity stages. In a previous work, these two Sciaenidae species presented significant differences in sagitta otoliths shape, which were related to environmental differences (e.g. water temperature, nutrients, depth) among the sampling sites (Atafona, Farol de Sao Tome and Rio das Ostras). Meanwhile, we do not observed differences in the EPR spectra, indicating that the aragonite crystallization process and the occupation of manganese are not related with the environment where these fish species are living. Then, we can infer that the

  8. PENGARUH ECOTOURISM TERHADAP PELESTARIAN LINGKUNGAN KAMPUNG NAGA KABUPATEN TASIKMALAYA

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    N.Yesi Sri Yulistianti

    2016-11-01

    Full Text Available ABSTRAK Kabupaten Tasikmalaya memiliki sebuah Objek Wisata Budaya yang khas dan masih terjaga sampai saat ini, yaitu Kampung Naga. Kegiatan Ecoturism merupakan salah satu ciri khas dari objek wisata Kampung Naga. Kegiatan Ecoutourism di Kampung Naga dilakukan oleh masyarakat lokal yang tinggal di objek wisata ini. Penelitian ini bertujuan untuk mengetahui Ecotourism yang ada di Kampung Naga dan kondisi pelestarian lingkungan yang ada di Objek Wisata Kampung Naga, mengetahui seberapa besar pentingnya mengenai pelestarian lingkungan, dan mengetahui seberapa besar pengaruh Ecotourism terhadap pelestarian lingkungan.Sampel diambil dengan menggunakan metodesampling. Jumlahsampel ditentukanyaitu sebanyak 100 responden yang datang ke KawasanObjek WisataKampung Naga. Penelitianini menggunakan data primer yang diambil dari hasil wawancara, observasi dan penyebaran pernyataan berupa angket/kuesioner. Data yang diperoleh di analisis dengan menggunakan analisis kuantitatif. Penelitian ini terdiri dari variabel bebas Ecotourism (X dan variabel terikat pelestarian lingkungan (Y. Teknik pengolahan data yang digunakan adalah analisis regresi linier sederhana dengan menggunakan bantuan Software Spss 16. Hasil penelitian menunjukan bahwa Ecotourism (X memiliki pengaruh yang positif terhadap pelestarian lingkungan (Y. Persamaan regresi linier sederhana yang dibentuk yaitu Y = 17.075 + 0,339X yang berarti setiap pertambahan Ecotourism (X sebesar satu poin maka kepuasan berkunjung akan meningkat sebesar 0,339. Dengan hasil koefisien determinasi sebesar 11,5% dalam kategori sedang. Kata Kunci : Ecotourism, Pelestarian Lingkungan, Wisata Budaya ABSTRACT Tasikmalayadistrict has a distinctive cultural attractions and still maintained until today, namely Kampung Naga. Ecoturism activity is one of the characteristics of attractions Kampung Naga. Ecoutourism in Kampung Naga activities carried out by local people who live in this attraction. This study aims to determine

  9. Anticestodal Efficacy of Folklore Medicinal Plants of Naga Tribes in ...

    African Journals Online (AJOL)

    Moderate activity was recorded for the leaves of Clerodendrum colebrookianum, Lasia spinosa and Centella asiatica, while Curcuma longa, Cinnamomum cassia, Gynura angulosa, Lasia spinosa (stem) and Aloe vera revealed a negligible degree of anticestodal activity. Key Words: Anticestodal Efficacy, Naga Tribes, India, ...

  10. PERFORMAN BROILER YANG DIBERI RANSUM MENGANDUNG TEPUNG KULIT BUAH NAGA TANPA DAN DENGAN Aspergillus niger TERFERMENTASI

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    Astuti I

    2016-06-01

    Full Text Available Penelitian ini bertujuan untuk mengkaji pengaruh pemberian tepung kulit buah naga tanpa atau terfermentasidalam ransum terhadap performans ayam broiler. Rancangan acak lengkap (RAL dengan 7 perlakuan dan 3ulangan digunakan dalam penelitian ini. Penelitian menggunakan ayam broiler jantan umur dua minggu sebanyak84 ekor. Perlakuan adalah ransum tanpa menggunakan tepung kulit buah naga (kontrol atau P0, ransum denganmenggunakan tepung kulit buah naga 2% (P1, ransum dengan menggunakan tepung kulit buah naga terfermentasi2% (P2, ransum dengan menggunakan tepung kulit buah naga 4% (P3, ransum dengan menggunakan tepungkulit buah naga terfermentasi 4% (P4, ransum dengan menggunakan tepung kulit buah naga 6% (P5, ransumdengan menggunakan tepung kulit buah naga terfermentasi 6% (P6. Peubah yang diamati konsumsi pakan,pertambahan bobot badan, konversi pakan, mortalitas dan persentase bagian-bagian karkas. Hasil penelitianmenunjukkan ransum mendapat tepung kulit buah naga tanpa dan dengan terfermentasi berbeda tidak nyata(P>0,05 terhadap konsumsi pakan, pertambahan bobot badan, konversi pakan dan mortalitas. Sama halnyadengan persentase bagian-bagian karkas ayam broiler yang meliputi persentase dada, persentase sayap, persentasepaha, dan persentase punggung menunjukkan hasil yang berbeda tidak nyata (P>0,05. Pemberian tepung kulitbuah naga tanpa dan dengan terfermentasi sampai level 6% dapat diberikan pada ternak ayam broiler.

  11. Morphology and morphometric relationships of the sagitta of Diapterus auratus (Perciformes: Gerreidae from Veracruz, Mexico

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    Verónica Rivera Félix

    2013-03-01

    Full Text Available Sagittae otoliths are the most studied because of their morphological variability and size; the sagittae may also have valuable taxonomic use and for D. auratus has not yet been described. In the present study we present a morphological description of the sagitta otolith and an analysis of its correlation with various morphometric parameters. The biological material was captured with a beach seine in the coasts of Alvarado and Port of Veracruz, from November 2009 to June 2010. Sagittae were extracted, cleaned, photographed (SEM and optical, and measured. The analysis included the correlations between sagitta’s length and width, versus the fish standard length, height and weight, for a total of 449 fishes. The comparison between left and right sagitta showed no significant difference in both otolith length and width (t-tests, pLos otolitos sagitta son los más estudiados debido a su variabilidad morfológica y a su tamaño, sin embargo, los otolitos de D. auratus no han sido estudiados hasta el momento. En el presente estudio, se muestra una descripción completa de la morfología y un análisis morfométrico de diversas medidas. El análisis incluye las relaciones entre el ancho y largo de la sagitta contra la longitud cefálica, longitud estándar, altura y peso de 449 peces. El material biológico fue capturado con un chinchorro playero en las costas de Alvarado y el Puerto de Veracruz de noviembre 2009 a junio 2010. Las sagittae fueron extraídas, limpiadas, fotografiadas (SEM y ópticas y medidas. La comparación entre el otolito derecho e izquierdo no mostró diferencias significativas entre el ancho y largo (prueba de t, p<0.05 para cada sexo. El otolito derecho fue utilizado para las relaciones de las distintas medidas del otolito del pez y del otolito de hembras y machos; la prueba de Fisher (d.f. 161 and 143, p<0.001 no mostró diferencias significativas de las pendientes e intersecciones entre ellos. La relación longitud del otolito

  12. Anatomia foliar de Rudgea decipiens Müll. Arg. e R. macrophylla Benth. (Rubiaceae Leaf anatomy of Rudgea decipiens Müll. Arg. and R. macrophylla Benth. [Rubiaceae

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    André Mantovani

    1995-12-01

    Full Text Available São apresentados dados sobre a anatomia das folhas de Rudgea decipiens e R. macrophylla (Rubiaceae. Ambas ocorrem na Floresta de Tijuca (Mata Atlântica, Rio de Janeiro. As folhas são hipostomáticas, com estômatos do tipo paralelocítico, dotadas de mesofilo dorsiventral, feixes vasculares do tipo colateral, papilas na epiderme abaxial e cutícula estriada. Em R. macrophylla, destaca-se a ocorrência de estômatos peculiares.Anatomical characteristics of Rudgea decipiens and R. macrophylla leaves were examined. The two species grow in Floresta da Tijuca (Mata Atlântica, Rio de Janeiro municipality. The leaves are hipostomatics, with parallelocytic stomata, dorsiventral mesophyll, colateral vascular bundles, papillae on the lower surface and striate cuticle. The stomata show peculiar aspects in R. macrophylla.

  13. Morphology and histology of the reproductive system of Sagitta planctonis Steinhaus, 1896 (Chaetognatha)

    NARCIS (Netherlands)

    Pierrot-Bults, A.C.

    1975-01-01

    The morphology and histology of the reproductive organs of Sagitta planctonis forma planctonis and of S. planctonis forma zetesios are described. No difference in number of oocytes was observed. The existence of a temporary oviduct is questionable. It may be possible that the so-called accessory

  14. XMM-Newton and Swift Observations of WZ Sagittae: Spectral and Timing Analysis

    Science.gov (United States)

    Nucita, A. A.; Kuulkers, E.; De Paolis, F.; Mukai, K.; Ingrosso, G.; Maiolo, B. M. T.

    2014-01-01

    WZ Sagittae is the prototype object of a subclass of dwarf novae with rare and long (super)outbursts, in which a white dwarf primary accretes matter from a low mass companion. High-energy observations offer the possibility of a better understanding of the disk-accretion mechanism in WZ Sge-like binaries.

  15. Green synthesis, characterization and antibacterial efficacy of palladium nanoparticles synthesized using Filicium decipiens leaf extract

    Science.gov (United States)

    Sharmila, G.; Farzana Fathima, M.; Haries, S.; Geetha, S.; Manoj Kumar, N.; Muthukumaran, C.

    2017-06-01

    Synthesis of metal nanoparticles through green chemistry route is an emerging eco-friendly approach in the present days. An eco-friendly, biogenic synthesis of palladium nanoparticles (PdNPs) using Filicium decipiens leaf extract was reported in the present study. The synthesized PdNPs were characterized by UV-visible spectroscopy, Transmission electron microscopy (TEM), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The PdNPs formation was confirmed by UV-visible spectrophotometer and spherical shaped PdNPs with size range of 2-22 nm was observed in TEM analysis. Energy dispersive X-ray spectroscopy (EDS) analysis confirmed the presence of palladium in the synthesized nanoparticles. The crystalline nature of PdNPs was confirmed by XRD pattern and compared with the standard. The phytochemicals and proteins were identified by their functional groups in FT-IR spectrum and revealed the amide, amine groups present in F. decipiens may have involved in the bio-reduction reaction for PdNPs synthesis. Prepared PdNPs showed potential antibacterial activity against both Gram-positive and Gram-negative bacteria. F. decipiens leaf extract based PdNPs showed high bactericidal activity against Escherichia coli, Pseudomonas aeruginosa as compared to Staphylococcus aureus and Bacillus subtilis Results showed that phytochemicals rich F. decipiens leaf extract may be utilized as an effective non-toxic reducing agent for PdNPs synthesis and prepared PdNPs may useful in biomedical applications.

  16. Occurrence of swarms of Sagitta enflata (Chaetognatha) and Pleurobrachia globosa (Ctenophora) in the coastal waters of Goa

    Digital Repository Service at National Institute of Oceanography (India)

    Goswami, S.C.

    Swarms of Chaetognatha @iSagitta enflata@@ Grassi and Ctenophore @iPleurobrachia globosa@@. Moser were studied in coastal waters of Goa. These two forms together constituted 90 to 94% of total biomass. Medusae and Siphonophora were the other main...

  17. Two forms of phycobilisomes in the Antarctic red macroalga Palmaria decipiens (Palmariales, Florideophyceae).

    Science.gov (United States)

    Lüder, Ulrike H.; Knoetzel, Jürgen; Wiencke, Christian

    2001-08-01

    The phycobilisomes (PBS), the light-harvesting antennae, from the endemic Antarctic red macroalga Palmaria decipiens were isolated on discontinuous sucrose gradients in two discrete bands and not in one as expected. To exclude methodical faults, we also isolated PBS from the temperate Palmaria palmata and the unicellular red algae Porphyridium cruentum and Rhodella violacea. In P. palmata the PBS were separated in two discrete bands, whereas the PBS from Porphyridium and Rhodella were found in one band. The double-banded PBS (PBSup and PBSlow) from P. decipiens were further characterized by absorption and fluorescence spectroscopy, native and SDS-PAGE as well as by negative staining. The phycobiliproteins RIII-phycoerythrin, RI-phycocyanin and allophycocyanin were identified and 3 gamma-subunits were described. The PBSup and PBSlow showed no significant differences in their absorption spectra and phycobiliprotein ratios although the negative stained PBSlow were smaller. Differences were found in their low molecular mass subunit complexes, which are assumed to be r-phycoerythrin. The polypeptide pattern of the PBSup and PBSlow showed no differences in the molecular masses of their subunits and linker polypeptides, but in their percentage distribution. The results suggest that the PBSlow is a closer packed and PBSup a little more loosely aggregated hemiellipsiodal PBS form. We discuss the ecophysiological function of two PBS forms in P. decipiens and suggest advantages in the rapid acclimation to changes in environmental light conditions.

  18. Nepenthes naga, a new species of Nepenthaceae from Bukit Barisan of Sumatra

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    Pitra - Akhriadi

    2009-12-01

    Full Text Available AKHRIADI, P., HERNAWATI, PRIMALDHI, A. & HAMBALI, M. 2009. Nepenthes naga, a new species of Nepenthaceae from Bukit Barisan of Sumatra. Reinwardtia 12(5: 339 – 342. ⎯ A new species of Nepenthes from North Sumatra is described as Nepenthes naga Akhriadi, Hernawati, Primaldhi & Hambali. The key characters for this species are a triangular dichotomous appendage resembling a snake's tongue inserted sub-apically on the undersurface of the lid, and the undulate lid margin.

  19. PENGEMBANGAN BOOKLET PEMBUATAN YOGHURT KULIT BUAH NAGA UNTUK PARA PETANI BUAH BERBASIS PADA HASIL PENELITIAN

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    W.F Edi Hanzen

    2016-11-01

    Masyarakat belum memanfaatkan kulit buah naga dan hanya dibuang sebagai limbah. Pemanfaatan limbah kulit buah naga untuk produk olahan dalam rangka penganekaragaman pangan sampai saat ini masih belum dilakukan. Kulit buah naga memiliki kandungan nutrisi yang bermanfaat untuk pertumbuhan bakteri asam laktat. Salah satu bentuk makanan olahan dengan bahan dasar kulit buah naga dengan memanfaatkan bakteri asam laktat ialah yoghurt kulit buah naga. Booklet ini disusun berdasarkan hasil penelitian mengenai pembuatan yoghurt kulit buah naga. Booklet disusun untuk komunitas petani buah. Booklet berisi materi-materi tentang manfaat yoghurt dan petunjuk pembuatan yoghurt, alat dan bahan yang digunakan untuk membuat yoghurt, cara mengemas yoghurt dan strategi pemasaran yoghurt. Metode penelitian pengembangan ialah metode observasional dengan urutan langkah seperti yang dijelaskan oleh Hannafin dan Peck (1998. Hasil validasi dari para validator dan uji keterbacaan booklet oleh masyarakat petani buah  menunjukkan bahwa booklet yang disusun memiliki kualifikasi sangat menarik, sangat sesuai, dan sangat efektif untuk digunakan. Booklet yang dikembangkan layak digunakan dan dapat disebarluaskan sebagai media penyuluhan kepada masyarakat petani buah.

  20. Finger dermatoglyphic variations in Rengma Nagas of Nagaland India.

    Science.gov (United States)

    Banik, Sudip Datta; Pal, Paramita; Mukherjee, Deba P

    2009-03-01

    The Rengma Nagas are one of the major Mongoloid tribal populations in the North-Eastern state of Nagaland in India. Population variation and sexual dimorphism in respect of finger dermatoglyphic characteristics in 207 adult individuals (104 males and 103 females) are reported in this present context. Frequency distribution of finger pattern types in different digits (both left and right sides combined) showed that whorls were the most prevalent patterns among both males (52.19%) and females (55.69%), followed by loops (47.70% in males and 42.81% in females). Significant sex differences in Dankmeijer Index (t = 1.47; p dermatoglyphic pattern types, Pattern Intensity Index in fingers, TFRC and AFRC no significant sex differences were observed.

  1. POMPA AIR BERTENAGA HIBRID UNTUK IRIGASI TANAMAN BUAH NAGA

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    Danar Susilo Wijayanto

    2016-12-01

    Full Text Available Pemanfaatan angin dan radiasi matahari sebagai sumber energi bisa mengurangi ketergantungan terhadap penggunaan bahan bakar fosil, mengurangi biaya operasional dalam jangka panjang, dan mendukung konservasi sumber daya alam. Pengabdian ini menerapkan penggunaan sumber energi terbarukan untuk pompa air yang digunakan sebagai sumber irigasi tanaman buah dan sayuran pada pertanian organik di Balai Percontohan Pertanian (BPP Ngasinan, Kelurahan Beji, Kecamatan Nguntoronadi, Kabupaten Wonogiri. Teknologi hibrid menggabungkan turbin tenaga angin dan sel surya untuk memberikan pasokan listrik kepada pompa yang mengangkat air dengan Total Dynamic Head (TDH 12 meter. Sistem hibrid turbin angin dan solar sel mampu menghidupkan pompa air, sehingga pompa bisa mengalirkan air dari sumur ke tandon air. Sistem irigasi tetes dari tandon ke tanaman buah naga menyebabkan tanaman selalu lembab, sehingga mengurangi resiko kekeringan dan penyakit tanaman.

  2. High photobiont diversity in the common European soil crust lichenPsora decipiens.

    Science.gov (United States)

    Ruprecht, Ulrike; Brunauer, Georg; Türk, Roman

    2014-01-01

    The genetic diversity of green algal photobionts (chlorobionts) in soil crust forming lichens was studied as part of the SCIN-project (Soil Crust InterNational). A total of 64 lichen samples were collected from four different sites along latitudinal and altitudinal gradients in Europe (Tabernas/Spain; Hochtor-Großglockner/Austria; Gynge Alvar/Sweden; Ruine Homburg/Germany). The dominant lichen species at all four sites was Psora decipiens , often occurring with Buellia elegans, Fulgensia bracteata, F. fulgens and Peltigera rufescens. Genetic identification of chlorobionts was carried out using the nuclear marker (nrITS) and a chloroplast marker ( psb L-J). We found P. decipiens to be associated with several different species of Trebouxia and Asterochloris , although previously described to only have Asterochloris sp. The phylogenetic analyses revealed a high chlorobiont diversity with 12 well supported clades, including Trebouxia asymmetrica , T. jamesii , T. impressa and other, as yet taxonomically unidentified clades ( Trebouxia sp. URa1-4, T . sp. URa6, T . sp. URa7-13). Additionally, five clades of Asterochloris were identified ( A. magna, A. sp. URa14 -17). Most of the chlorobiont species appeared to be cosmopolitan, but five clades were unevenly distributed between the sampling sites with only Trebouxia being found in the warm and dry Spanish habitats and combinations of Trebouxia and Asterochloris in the cooler and more humid habitats. The wide range of chlorobiont species might contribute to the observed domination of P. decipiens at all four research sites of the SCIN project which range from a desert in Spain to an alpine site in the Alps of Austria.

  3. Human case of gastric infection by a fourth larval stage of Pseudoterranova decipiens (Nematoda, Anisakidae

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    Rubén Mercado

    1997-04-01

    Full Text Available Only three cases of human infection by anisakid nematodes have been reported in Chile since 1976. In the present case, an anisakid worm, identified as a fourth-stage Pseudoterranova decipiens larva, was removed with a gastroendoscopic biopsy clipper from the stomach of a 45 year-old man from southern Chile. The patient, who presented acute epigastric pain and a continuous sensation of having an empty stomach, reported having eaten smoked fish. The worm was fixed in 70% ethanol and cleaned in lactophenol for morphological study. The morphometric characteristics of the worm are described and drawn. Anisakid larvae in fish flesh can be killed by freezing or cooking.

  4. PRINCIPALES ASPECTOS MORFOMÉTRICOS DE LA CIÉNAGA DE CACHIMBERO, SANTANDER – COLOMBIA.

    Directory of Open Access Journals (Sweden)

    BENJUMEA HOYOS CARLOS AUGUSTO

    2010-05-01

    Full Text Available En este artículo se presenta el mapa batimétrico y algunos aspectos morfométricos relevantes de la ciénaga de Cachimbero. Es un sistema tropical somero con profundidad media de 1,83 m. La forma de esta ciénaga, basados en la curva hipsográfica relativa del área frente a la profundidad es cóncava (C. La ciénaga posee altos valores de los parámetros índice de desarrollo del volumen (Vd y la relación de profundidad (cociente profundidad media / profundidad máxima, Dmed / Dmáx, esto refleja su morfometría con un fondo relativamente plano y pendientes pronunciadas desde las orillas hacia el fondo. La ciénaga es de tipo alargado, característica que es corroborada con el índice de desarrollo del perímetro o de la línea costera (F, el cual es superior a la unidad. El valor de este parámetro indica la gran influencia de los factores externos sobre la dinámica de la ciénaga.

  5. Molecular diagnosis of Pseudoterranova decipiens s.s in human, France.

    Science.gov (United States)

    Brunet, Julie; Pesson, Bernard; Royant, Maude; Lemoine, Jean-Philippe; Pfaff, Alexander W; Abou-Bacar, Ahmed; Yera, Hélène; Fréalle, Emilie; Dupouy-Camet, Jean; Merino-Espinosa, Gema; Gómez-Mateos, Magdalena; Martin-Sanchez, Joaquina; Candolfi, Ermanno

    2017-06-06

    Anisakis and Pseudoterranova are the main genera involved in human infections caused by nematodes of the Anisakidae family. Species identification is complicated due to the lack of differential morphological characteristics at the larval stage, thus requiring molecular differentiation. Pseudoterranova larvae ingested through raw fish are spontaneously eliminated in most cases, but mechanical removal by means of endoscopy might be required. To date, only very few cases of Pseudoterranova infection have been reported in France. A 19-year-old woman from Northeastern France detected, while brushing her teeth, a larva exiting through her mouth. The patient who presented with headache, diarrhea, and abdominal cramps reported having eaten baked cod. The worm was a fourth-stage larva with a size of 22 × 0.9 mm, and molecular biology identified it as Pseudoterranova decipiens sensu stricto (s. s.). In a second P. decipiens infection case, occurring a few months later, a worm exited through the patient's nose after she had eaten raw sea bream. These two cases demonstrate that Pseudoterranova infection is not uncommon among French patients. Therefore, molecular techniques should be more widely applied for a better characterization of anisakidosis epidemiology in France.

  6. PENGARUH PEMBERIAN EKSTRAK DAUN EKOR NAGA (Rhaphidophora pinnata, Schott TERHADAP PERKEMBANGAN UTERUS MENCIT (Mus musculus BETINA YANG TELAH DIOVARIEKTOMI

    Directory of Open Access Journals (Sweden)

    Maria Antonia Margaretha Ferandez

    2016-06-01

    Full Text Available Tanaman ekor naga (Rhaphidophora pinnata, Schott. mengandung zat aktif dari golongan senyawa alkaloid, flavonoid, saponin, tanin dan triterpenoid/steroid. Zat aktif yang terkandung dalam tanaman ekor naga bersifat fitoestrogen. Tujuan penelitian ini adalah untuk mengetahui pengaruh pemberian ekstrak daun ekor naga terhadap perkembangan uterus mencit (Mus musculus betina yang telah diovariektomi. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL yang terdiri dari empat kelompok perlakuan dengan masing-masing enam ulangan. PerlakuanP0 sebagai kontrol diberi NaCl 0,9% dan perlakuan P1, P2 dan P3 diberi ekstrak daun ekor naga dengan dosis 50, 100  dan 150 mg/KgBB. Ekstrak daun ekor naga diberikan setiap hari secara oral selama 14 hari sebanyak 0,2 ml dengan metode gavage. Variabel yang diamati adalah bobot uterus, diameter uterus dan ketebalan endometrium. Data yang diperoleh dianalisis dengan One Way Anova dilanjutkan dengan uji Duncan Multiple Range Test (DMRT. Hasil penelitian menunjukkan bahwa pemberian ekstrak daun ekor naga (R. pinnata, Schott menyebabkan peningkatan ketebalan endometrium sebesar 38,7% dan peningkatan diameter uterus sebesar 30,3% dibanding dengan kelompok kontrol. Dosis optimal ekstrak daun ekor naga (R. pinnata, Schott yang berpengaruh terhadap perkembangan uterus mencit adalah 100 mg/KgBB.

  7. Jonckheere Double Star Photometry – Part IX: Sagitta

    Science.gov (United States)

    Knapp, Wilfried

    2018-01-01

    If any double star discoverer is in urgent need of photometry then it is Jonckheere. There are over 3000 Jonckheere objects listed in the WDS catalog and a good part with magnitudes obviously far too bright. This report covers a part of the Jonckheere objects in the constellation Sagitta including a check if physical by means of UCAC5 proper motion data. In most cases only one image per object is taken for differential photometry as even a single image based measurement is better than the currently often given mere estimation. As by-product a new CPM candidate pair was discovered and as appendix the UCAC5 proper motion data quality was counter-checked with GAIA DR1 (TGAS).

  8. A new species of the genus Sagitta (Phylum Chaetognatha) from the Agatti lagoon (Laccadive Archipelago, Indian Ocean) with comments on endemism

    Digital Repository Service at National Institute of Oceanography (India)

    Casanova, J.P.; Nair, V.R.

    A new chaetognath Sagitta madhupratapi from the Agatti atoll, Laccadive Archipelago is described. The species belongs to the "hispida" group. Though collections were made from other atolls the species was found restricted to the Agatti suggesting...

  9. Ethnomathematics study: uncovering units of length, area, and volume in Kampung Naga Society

    Science.gov (United States)

    Septianawati, T.; Turmudi; Puspita, E.

    2017-02-01

    During this time, mathematics is considered as something neutral and not associated with culture. It can be seen from mathematics learning in the school which adopt many of foreign mathematics learning are considered more advanced (western). In fact, Indonesia is a rich country in cultural diversity. In the cultural activities, there are mathematical ideas that were considered a important thing in the mathematics learning. A study that examines the idea or mathematical practices in a variety of cultural activities are known as ethnomathematics. In Indonesia, there are some ethnic maintain their ancestral traditions, one of them is Kampung Naga. Therefore, this study was conducted in Kampung Naga. This study aims to uncover units of length, area, and volume used by Kampung Naga society. This study used a qualitative approach and ethnography methods. In this research, data collection is done through the principles of ethnography such as observation, interviews, documentation, and field notes. The results of this study are units of length, area, and volume used by Kampung Naga society and its conversion into standard units. This research is expected to give information to the public that mathematics has a relationship with culture and become recommendation to mathematics curriculum in Indonesia.

  10. Objective prioritization of intervention areas for the NAGA Foundation in the Kenya Tanzania border area

    NARCIS (Netherlands)

    Maat, ter H.W.; Hutjes, R.W.A.; Fleskens, L.; Querner, E.P.; Klostermann, J.E.M.; Jaspers, A.M.J.

    2016-01-01

    The NAGA foundation aims to establish Hydrologic Corridors, wherein re-greening and restoration of
    the landscape interacts with regional rain-bringing wind patterns to intensify the local hydrologic cycle
    to a point that a permanently greener and more productive ecosystem can be sustained.

  11. PENGARUH PEMBERIAN EKSTRAK DAUN EKOR NAGA (Rhaphidophora pinnata, Schott TERHADAP PERKEMBANGAN UTERUS MENCIT (Mus musculus BETINA YANG TELAH DIOVARIEKTOMI

    Directory of Open Access Journals (Sweden)

    Maria Antonia Margaretha Ferandez

    2015-12-01

    P0 sebagai kontrol diberi NaCl 0,9% dan perlakuan P1, P2 dan P3 diberi ekstrak daun ekor naga dengan dosis 50, 100  dan 150 mg/KgBB. Ekstrak daun ekor naga diberikan setiap hari secara oral selama 14 hari sebanyak 0,2 ml dengan metode gavage. Variabel yang diamati adalah bobot uterus, diameter uterus dan ketebalan endometrium. Data yang diperoleh dianalisis dengan One Way Anova dilanjutkan dengan uji Duncan Multiple Range Test (DMRT. Hasil penelitian menunjukkan bahwa pemberian ekstrak daun ekor naga (R. pinnata, Schott menyebabkan peningkatan ketebalan endometrium sebesar 38,7% dan peningkatan diameter uterus sebesar 30,3% dibanding dengan kelompok kontrol. Dosis optimal ekstrak daun ekor naga (R. pinnata, Schott yang berpengaruh terhadap perkembangan uterus mencit adalah 100 mg/KgBB.

  12. A Refined Radial Velocity Curve for the L Dwarf Donor of WZ Sagittae

    Science.gov (United States)

    Harrison, Thomas E.

    2017-12-01

    We have obtained a radial velocity curve for the L dwarf donor in WZ Sagittae using phase-resolved J-band spectra obtained with GNIRS on Gemini-north. We find a radial velocity semi-amplitude of {K}2=525+/- 11 {km} {{{s}}}-1. This result reduces the error bar by a factor of three over previous attempts. A relatively strong, unidentified emission line centered near 1.177 μm, corrupts the blue K i doublet in these data. While an H i emission feature near 1.2527 μm distorts the depth of the red K i doublet. In addition, a weak H i emission line at 1.1969 μm falls in the middle of the strongest FeH feature in these spectra. The combination of these contaminants prevents us from precisely constraining the spectral type of the donor. The strength of the absorption features remains consistent with an early L spectral type. Based on observations obtained at the Gemini Observatory, which is operated by the Association of Universities for Research in Astronomy, Inc., under a cooperative agreement with the NSF on behalf of the Gemini partnership: the National Science Foundation (United States), the National Research Council (Canada), CONICYT (Chile), Ministerio de Ciencia, Tecnología e Innovación Productiva (Argentina), and Ministério da Ciência, Tecnologia e Inovação (Brazil).

  13. Physical Growth and Nutritional Status among Ao Naga Children of Nagaland, Northeast India

    Directory of Open Access Journals (Sweden)

    Temsumongla Longkumer

    2013-01-01

    Full Text Available The present study was carried out on 571 Ao Naga children including 289 boys and 282 girls aged 8 to 15 years from Mokokchung town, Nagaland. This study tried to find out the physical growth according to the height and weight and nutritional status according to the body mass index (BMI following the classification by Cole et al. Our study revealed that the girls were taller than boys till 13 years and the boys became taller thereafter. As for weight, the girls were heavier during 10 to 14 years. The mean height and weight increased as the age advanced in both boys and girls. The prevalence of underweight was 30.12% and the prevalence of overweight was 2.28% among the Ao Naga children, and the girls were found to have a higher prevalence of overweight and the boys had a higher prevalence of underweight. This revealed that both underweight and overweight coexisted among the Ao Naga children from Mokokchung town, although the prevalence of overweight was not high.

  14. sobre la calidad del agua de la ciénaga

    Directory of Open Access Journals (Sweden)

    Diego Alejandro Chalarca Rodríguez

    2007-01-01

    Full Text Available En el municipio de Ayapel, departamento de Córdoba, se realizaron cuatro muestreos de campo con el fin de obtener información representativa de las variaciones horarias del agua residual del municipio como también de la calidad del agua en la zona de influencia de éstas en la ciénaga de Ayapel. En el sector donde se presentan las principales descargas del alcantarillado se determinaron las variables fisicoquímicas y microbiológicas del agua residual doméstica y de la ciénaga. Ello con el fin de determinar el posible impacto de las aguas residuales domésticas sobre la calidad del agua de un sector de la ciénaga de Ayapel.Los resultados del estudio permiten afirmar que existe un impacto de las aguas residuales sobre el complejo cenagoso, sin embargo estas descargas afectan principalmente la calidad ambiental de los sitios aledaños al casco urbano del municipio de Ayapel, principalmente en las épocas de aguas bajas incluyendo la zona pelágica del sector E0.

  15. KOSMOLOGI RUANG ADAT SEBAGAI IDENTITAS PEMUKIMAN KAMPUNG NAGA, TASIKMALAYA - JAWA BARAT

    Directory of Open Access Journals (Sweden)

    Meta Khairunnisa

    2014-10-01

    Full Text Available [Title: Traditional Cosmologycal Space as Kampung Naga Setlement Identity, Tasikmalaya - Jawa Barat] Located far from the city, an architectural masterpiece grows and developes in traditional settlement. The form and settlement identity merges with emotional’s people inside that not only creates an identity but also influences in the development of surrounding area . local wisdom is created from local identity and cultural that becomes soul and character of the settlement (Haryanto,2007:89. Place is created by experience memories in the past that makes the familiar space and indepth meaning (Tuan,2010:73. Kampung Naga is one of the Sundanesse traditional settlement in West Java that maintains the culture and local wisdom, nevertheless globalisation begin to influences the meaning of cultural space inside. Its has a cosmology cocept, proper behaviour and religion that is created naturally and transmitted orally from generation to generation.The research is to understand cultural themes in Kampung Naga as an identity of Naga’s people. Etnography metodology is used to describe the space indepth and connectivity of the meaning. Cultural spaces that is created from cosmologycal persception and traditional low are Pamali space, Sacred Space and Gender space, the elements of space inside give indepth meaning and create local identity of Sundanese people.

  16. PEMANFAATAN KULIT BUAH NAGA (Dragon Fruit SEBAGAI PEWARNA ALAMI MAKANAN PENGGANTI PEWARNA SINTETIS

    Directory of Open Access Journals (Sweden)

    Prima Astuti Handayani

    2013-05-01

    Full Text Available Kulit buah naga merupakan limbah hasil pertanian yang mengandung zat warna alami antosianin cukup tinggi. Antosianin merupakan zat warna yang berperan memberikan warna merah yang berpotensi menjadi pewarna alami untuk pangan dan dapat dijadikan alternatif pengganti pewarna sintetis yang lebih aman bagi kesehatan. Pengambilan zat warna antosianin dilakukan dengan metode ekstraksi. Pelarut yang digunakan adalah aquades. Variabel penelitian antara lain varietas buah naga, konsentrasi asam sitrat dalam pelarut, suhu ekstraksi, dan waktu ekstraksi. Potongan kulit buah naga diekstraksi dengan pelarut aquades dan asam sitrat dengan perbandingan tertentu, pada suhu ekstraksi 25-800C dan waktu ekstraksi 0,5-3 jam. Analisis kadar antosianin dilakukan dengan analisa antosianin metode Glusti dan Wrolstad. Hasil percobaan diperoleh bahwa varietas buah naga daging merah menghasilkan kadar antosianin terbesar 22,59335 ppm. Selain itu kadar antosianin terbesar diperoleh pada variasi pelarut aquades:asam sitrat (5:1 26,4587 ppm, variasi pada suhu kamar menghasilkan 21,5028 ppm dan waktu pengadukan  3 jam menghasilkan 23,3027 ppm. Pewarna alami ini telah diaplikasikan pada makanan dan diujikan pada tikus putih, hasil uji coba menunjukkan pewarna buah naga dapat dipakai sebagai pewarna alami makanan. Dragon fruit peel is agricultural waste which contains quite high natural pigments of anthocyanins. Anthocyanin is a dye that potentially provides a red natural colorant for food and alternatively used as synthetic dye which is safe for health. In this study, the process of taking anthocyanin was conducted using extraction method. The solvent used was distilled water. The variables observed in the research include dragon fruit varieties, the concentration of citric acid in the solvent, extraction temperature, and extraction time. The dragon fruit peel was extracted using solvents of distilled water and citric acid at a certain ratio, at extraction temperature

  17. Feeding rates in the chaetognath Sagitta elegans : effects of prey size, prey swimming behaviour and small-scale turbulence

    DEFF Research Database (Denmark)

    Saito, H.; Kiørboe, Thomas

    2001-01-01

    distances. We develop a simple prey encounter rate model by describing the swimming prey as a 'force dipole' and assuming that a critical signal strength is required to elicit an attack. By fitting the model to the observations, a critical signal strength of 10(-2) cm s(-1) is estimated; this is very...... at rates up to an order of magnitude higher than similarly sized females, probably owing to differences in swimming behaviour. Sagitta elegans is an ambush predator that perceives its prey by hydromechanical signals. Faster swimming prey generates stronger signals and is, hence, perceived at longer...

  18. Ciénaga (Magdalena, una región administrativa o municipio de enclave

    Directory of Open Access Journals (Sweden)

    Luis Humberto Hernández

    2006-01-01

    Full Text Available El análisis sobre las regiones de enclave, el caso del municipio de Ciénaga, en el Magdalena, nos permitió concluir que su proceso de modernización estuvo determinado por la presencia de la empresa multinacional bananera United Fruit Company. La multinacional bananera fue la que introdujo en la región el trabajo asalariado moderno, dislocando las formas serviles y premodernas existentes. Al atraer la mano de obra servil regional, que utilizaban las haciendas ganaderas, y convertirla en mano de obra asalariada, fundamentó sus procesos socioeconómicos y político administrativo modernos.

  19. EKSTRAKSI PEKTIN KULIT BUAH NAGA (Dragon fruit DAN APLIKASINYA SEBAGAI EDIBLE FILM

    Directory of Open Access Journals (Sweden)

    Megawati -

    2014-10-01

    Full Text Available Ekstraksi pektin kulit buah naga dilakukan menggunakan metode Microwave Assisted Extraction (MAE dengan variasi berat bahan (10, 15, and 20 gram dan waktu ekstraksi (15, 20, and 25 minute. Ekstraksi dengan variasi berat bahan dilakukan pada waktu ekstraksi 25 menit dan daya 600 W, sedangkan ekstraksi dengan variasi waktu dilakukan pada berat bahan 10 gram dan daya 600 W. Pektin yang diperoleh dianalisis kadar pektinnya menggunakan uji Fourier Transform Infrared (FTIR dan diproses menjadi edible film. Hasil penelitian menunjukkan bahwa yield pektin kulit buah naga  dengan metode MAE  lebih besar dibandingkan metode konvensional. Variasi berat bahan mempengaruhi yield pektin yang dihasilkan, semakin sedikit bahan yang digunakan dalam ekstraksi, semakin besar yield pektin kulit buah naga yang dihasilkan. Yield pektin terbesar (72 % dihasilkan pada variasi berat 10 gram. Variasi waktu ekstraksi juga memberikan pengaruh terhadap yield pektin, semakin lama waktu ekstraksi semakin besar yield pektin kulit buah naga yang dihasilkan. Yield pektin terbesar dihasilkan pada waktu ekstraksi 25 menit. Pektin hasil ekstraksi dapat digunakan sebagai bahan edible film. Extraction of pectinfrom dragon fruit peel is conducted using Microwave Assisted Extraction (MAE method with the variation of the weight of the raw materials are 10, 15, and 20 gram and the time of the extraction are 15, 20 and 25 minutes. Extraction with the variation of the weight of raw material is conducted in 25 minutes using power of 600 W, whereas the extraction with the variation of time is conducted with 10 gram of raw material using power of 600 W. The obtained pectin was analyzed using Fourier Transform Infrared (FTIR and processed into edible film. The result of the research shows that MAE method provides more yield of dragon fruit peel rather than the conventional method. The variation of the weight affecting the amount of the obtained pectin, the less material used in the

  20. Multiple, Distinct Intercontinental Lineages but Isolation of Australian Populations in a Cosmopolitan Lichen-Forming Fungal Taxon, Psora decipiens (Psoraceae, Ascomycota

    Directory of Open Access Journals (Sweden)

    Steven D. Leavitt

    2018-02-01

    Full Text Available Multiple drivers shape the spatial distribution of species, including dispersal capacity, niche incumbency, climate variability, orographic barriers, and plate tectonics. However, biogeographic patterns of fungi commonly do not fit conventional expectations based on studies of animals and plants. Fungi, in general, are known to occur across exceedingly broad, intercontinental distributions, including some important components of biological soil crust communities (BSCs. However, molecular data often reveal unexpected biogeographic patterns in lichenized fungal species that are assumed to have cosmopolitan distributions. The lichen-forming fungal species Psora decipiens is found on all continents, except Antarctica and occurs in BSCs across diverse habitats, ranging from hot, arid deserts to alpine habitats. In order to better understand factors that shape population structure in cosmopolitan lichen-forming fungal species, we investigated biogeographic patterns in the cosmopolitan taxon P. decipiens, along with the closely related taxa P. crenata and P. saviczii. We generated a multi-locus sequence dataset based on a worldwide sampling of these taxa in order to reconstruct evolutionary relationships and explore phylogeographic patterns. Both P. crenata and P. decipiens were not recovered as monophyletic; and P. saviczii specimens were recovered as a monophyletic clade closely related to a number of lineages comprised of specimens representing P. decipiens. Striking phylogeographic patterns were observed for P. crenata, with populations from distinct geographic regions belonging to well-separated, monophyletic lineages. South African populations of P. crenata were further divided into well-supported sub-clades. While well-supported phylogenetic substructure was also observed for the nominal taxon P. decipiens, nearly all lineages were comprised of specimens collected from intercontinental populations. However, all Australian specimens representing

  1. Multiple, Distinct Intercontinental Lineages but Isolation of Australian Populations in a Cosmopolitan Lichen-Forming Fungal Taxon, Psora decipiens (Psoraceae, Ascomycota).

    Science.gov (United States)

    Leavitt, Steven D; Westberg, Martin; Nelsen, Matthew P; Elix, John A; Timdal, Einar; Sohrabi, Mohammad; St Clair, Larry L; Williams, Laura; Wedin, Mats; Lumbsch, H T

    2018-01-01

    Multiple drivers shape the spatial distribution of species, including dispersal capacity, niche incumbency, climate variability, orographic barriers, and plate tectonics. However, biogeographic patterns of fungi commonly do not fit conventional expectations based on studies of animals and plants. Fungi, in general, are known to occur across exceedingly broad, intercontinental distributions, including some important components of biological soil crust communities (BSCs). However, molecular data often reveal unexpected biogeographic patterns in lichenized fungal species that are assumed to have cosmopolitan distributions. The lichen-forming fungal species Psora decipiens is found on all continents, except Antarctica and occurs in BSCs across diverse habitats, ranging from hot, arid deserts to alpine habitats. In order to better understand factors that shape population structure in cosmopolitan lichen-forming fungal species, we investigated biogeographic patterns in the cosmopolitan taxon P. decipiens , along with the closely related taxa P. crenata and P. saviczii . We generated a multi-locus sequence dataset based on a worldwide sampling of these taxa in order to reconstruct evolutionary relationships and explore phylogeographic patterns. Both P. crenata and P. decipiens were not recovered as monophyletic; and P. saviczii specimens were recovered as a monophyletic clade closely related to a number of lineages comprised of specimens representing P. decipiens . Striking phylogeographic patterns were observed for P. crenata , with populations from distinct geographic regions belonging to well-separated, monophyletic lineages. South African populations of P. crenata were further divided into well-supported sub-clades. While well-supported phylogenetic substructure was also observed for the nominal taxon P. decipiens , nearly all lineages were comprised of specimens collected from intercontinental populations. However, all Australian specimens representing P. decipiens

  2. Dehydration improves cryopreservation of mat rush (Juncus decipiens Nakai) basal stem buds on cryo-plates.

    Science.gov (United States)

    Niino, T; Yamamoto, S I; Fukui, K; Castillo Martinez, C R; Arizaga, M V; Matsumoto, T; Engelmann, F

    2013-01-01

    Two cryopreservation procedures using aluminium cryo-plates, termed V-Cryo-plate and D-Cryo-plate, were successfully developed for in vitro mat rush (Juncus decipiens Nakai) basal stem buds. Multiple stems induced in liquid MS medium containing 8.9 μM BA by roller culture were cut into small clumps, plated on solid MS medium and cultured for 1 week at 25 degree C. Clumps that had produced many buds were cold-hardened at 5 degree C for 1-2 months. The buds with basal stems were dissected from small clumps and precultured overnight at 25 degree C on solid MS medium containing 0.3 M sucrose. Precultured buds were placed on aluminium cryo-plates and embedded in calcium alginate gel. Osmoprotection was performed by immersing the cryo-plates for 30 min at 25 degree C in loading solution (2 M glycerol + 1.0 M sucrose). In the D-Cryo-plate procedure, the buds were dehydrated to 27-25% moisture content (fresh weight) by placing the cryo-plates in the air current of a laminar flow cabinet for 2 to 3 h. In the V-Cryo-plate procedure, buds were dehydrated by immersing the cryo-plates in PVS2 vitrification solution for 40 min at 25 degree C. In both procedures, cooling was performed by placing the cryo-plates in uncapped cryotubes, which were immersed in liquid nitrogen. For rewarming, cryo-plates were immersed in medium with 1.0 M sucrose for 20 min at room temperature. Regrowth of cryopreserved buds of line 'Kitakei 2' using D-Cryo-plate and V-Cryo-plate procedures, was 90% and 80%, respectively. The two procedures were applied to 20 additional mat rush lines. Using the V-Cryo-plate procedure resulted in regrowth ranging between 13.3 and 86.7%, with an average of 52.5%. The D-Cryo-plate led to regrowth ranging between 73.3 and 96.7%, with an average of 86.3%. The D-Cryo-plate procedure will facilitate cryostorage of mat rush germplasm.

  3. Cambios espacio-temporales del plancton en la ciénaga de Aayapel (Córdoba-Colombia), durante la época de menor nivel del agua

    OpenAIRE

    Jaramillo-Londoño, Juan Carlos; Aguirre-Ramírez, Néstor Jaime

    2012-01-01

    Se evaluaron los cambios espaciales y temporales de los ensambles fitoplanctónicos y zooplanctónicos durante la época de menor nivel de agua en la Ciénaga de Ayapel. Se tomaron muestras integradas en toda la columna de agua, en seis estaciones de muestreo, siguiendo el eje longitudinal de la ciénaga en sentido norte-sur, y durante siete días continuos. Durante el período de estudio la ciénaga se comportó como un sistema de aguas blandas, alcalino, altamente turbio, con profundidad y transpare...

  4. Kopfjäger im Schatten des Himalaya : Frankfurter Wissenschaftlerpaar über die verborgene Welt der Naga

    OpenAIRE

    Kunz, Richard

    2009-01-01

    Rezension zu: Aglaja Stirn und Peter van Ham : The Hidden World of the Naga – Living Traditions in Northeast India and Burma : Prestel Verlag, München, Berlin, London, New York, 2003, ISBN 3-7913-2878-6, 192 Seiten, 75 Euro.

  5. RESOLUSI KONFLIK ANTARA MASYARAKAT LOKAL DENGAN PERUSAHAAN PERTAMBANGAN (STUDI KASUS: KECAMATAN NAGA JUANG, KABUPATEN MANDAILING NATAL, PROVINSI SUMATERA UTARA

    Directory of Open Access Journals (Sweden)

    Dian Taufik Ramadhan

    2016-03-01

    Full Text Available Konflik antara PT. SMM, masyarakat Kecamatan Naga Juang, dan Pemerintah Kabupaten Mandailing Natal, berakar pada hubungan ekonomi yang menyangkut pengelolaan dan pemanfaatan komoditi emas. Penelitian ini berupaya melihat relasi di antara ketiga stakeholder tersebut. Melihat hal-hal yang menjadi sebab konflik, mengurai struktur dan dinamika konfik serta merumuskan strategi resolusi konflik. Hasil penelitian menunjukkan, dimensi sebab konflik disebabkan oleh dimensi ekonomi atas pengelolaan dan pemanfaatan komoditi emas, dimensi struktur dan dinamika sangat dipengaruhi oleh peran aktor yang mendorong peningkatan ketegangan dan eskalasi konfik. Resolusi konflik yang dirumuskan yaitu strategi akomodatif. Strategi akomodatif adalah strategi yang mengakomodir kepentingan dan espektasi dari dua stakeholder kunci yaitu, Pemkab Madina dan masyarakat Kecamatan Naga Juang. Conflict between PT. SMM, Naga Juang district community, and the government of Mandailing Natal Regency, rooted in economic relations that concern to the management and utilization of gold’s commodity.  This research attempt to see the relationship between the three stakeholders, see the causes of conflict, analyze the structure and dynamics of conflict, and also formulate strategies of conflict resolution. The results showed, the economic dimension of the conflict caused by the management and utilization of gold commodity, structural and dynamics dimensions are strongly influenced by the role of actors which encouraged tension escalation and conflicts. The formulation of conflict resolution is an accommodative strategic which is a strategy that accommodates the interests and expectations of two key stakeholders, namely Mandailing Natal regencial government, and Naga Juang district community.

  6. Larvae of Crossorhombus valde-rostratus (Alcock) and C. azureus (Alcock) (Heterostomata: Pisces) collected during the International Indian Ocean Expedition and Naga Expedition

    Digital Repository Service at National Institute of Oceanography (India)

    Devi, C.B.L.

    showed a decided liking to coastal or nearshore waters and occurred in the stratum mostly during night. However they also preferred SW monsoon season as the other species. Naga samples also showed identical preferences in so far as diel variation...

  7. 2-D traveltime and waveform inversion for improved seismic imaging: Naga Thrust and Fold Belt, India

    Science.gov (United States)

    Jaiswal, Priyank; Zelt, Colin A.; Bally, Albert W.; Dasgupta, Rahul

    2008-05-01

    Exploration along the Naga Thrust and Fold Belt in the Assam province of Northeast India encounters geological as well as logistic challenges. Drilling for hydrocarbons, traditionally guided by surface manifestations of the Naga thrust fault, faces additional challenges in the northeast where the thrust fault gradually deepens leaving subtle surface expressions. In such an area, multichannel 2-D seismic data were collected along a line perpendicular to the trend of the thrust belt. The data have a moderate signal-to-noise ratio and suffer from ground roll and other acquisition-related noise. In addition to data quality, the complex geology of the thrust belt limits the ability of conventional seismic processing to yield a reliable velocity model which in turn leads to poor subsurface image. In this paper, we demonstrate the application of traveltime and waveform inversion as supplements to conventional seismic imaging and interpretation processes. Both traveltime and waveform inversion utilize the first arrivals that are typically discarded during conventional seismic processing. As a first step, a smooth velocity model with long wavelength characteristics of the subsurface is estimated through inversion of the first-arrival traveltimes. This velocity model is then used to obtain a Kirchhoff pre-stack depth-migrated image which in turn is used for the interpretation of the fault. Waveform inversion is applied to the central part of the seismic line to a depth of ~1 km where the quality of the migrated image is poor. Waveform inversion is performed in the frequency domain over a series of iterations, proceeding from low to high frequency (11-19 Hz) using the velocity model from traveltime inversion as the starting model. In the end, the pre-stack depth-migrated image and the waveform inversion model are jointly interpreted. This study demonstrates that a combination of traveltime and waveform inversion with Kirchhoff pre-stack depth migration is a promising approach

  8. Desarrollo de la sagitta en juveniles y adultos de Odontesthes argentinensis (Valenciennes, 1835 y O. bonariensis (Valenciennes, 1835 de la provincia de Buenos Aires, Argentina (Teleostei: Atheriniformes Development of the sagitta in young and adults of Odontesthes argentinensis (Valenciennes, 1835 and Odontesthes bonariensis (Valenciennes, 1835 from Buenos Aires province, Argentina (Teleostei: Atheriniformes

    Directory of Open Access Journals (Sweden)

    ANDREA D TOMBARI

    2005-12-01

    Full Text Available Se describió el desarrollo del otolito Sagitta de juveniles y adultos de Odontesthes argentinensis procedentes de Punta Rasa (36°22' S y Miramar (38°16' S y de Odontesthes bonariensis de la Laguna de Chascomús (35° 36' S. Se estudió, la morfología de las sagittae de ambas especies, analizando cuatro grupos morfológicos para O. argentinensis (I: 75-120 mm, II: 130-220 mm, III: 230-270 y IV: 280-320 mm y tres grupos morfológicos para O. bonariensis (I: 80-120 mm, II: 130-220 y III: 230-320 mm. Las características morfológicas comunes a la sagitta, de ambas especies, en los grupos estudiados son: presencia de sulcus, depresión areal dorsal en la cara medial, cara lateral con estrías y la presencia de un punto culminante en el borde dorsal. En la sagitta de O. argentinensis, la depresión areal dorsal se inicia ligada a la cauda, característica que permitió distinguir claramente entre otolitos de juveniles de ambas especies. A partir del estado adulto, la depresión areal dorsal se halla separada de la cauda en las dos especies y el análisis estadístico evidenció un crecimiento discontinuo. Se hallaron diferencias morfológicas entre pares de sagitta de un mismo individuo en cuanto a la forma del ostium, presencia de cisura, rostro y punto culminante, aunque no se halló significancia morfométricaThe development of the otolith sagitta was described in young and adults of two silverside species. Odontesthes argentinensis was collected from Punta Rasa (36°22' S and Miramar (38°16' S and, Odontesthes bonariensis collected from Laguna de Chascomús (35°36' S. Sagitta morphology was studied in both species, analyzing four morphological groups of O. argentinensis (I: 75-120 mm, II: 130-220 mm, III: 230-270 mm and IV: 280-320 mm and three morphological groups of O. bonariensis (I: 80-120 mm, II: 130-220 mm and III: 230-320 mm. The morphological features of the sagitta shared by both species are: sulcus present, dorsal areal depression

  9. Effects of anisakid nematodes Anisakis simplex (s.l.), Pseudoterranova decipiens (s.l.) and Contracaecum osculatum (s.l.) on fish and consumer Health

    DEFF Research Database (Denmark)

    Buchmann, Kurt; Mehrdana, Foojan

    2016-01-01

    with the infection, termed anisakidosis, vary from irritation of the oesophagus and stomach, via nausea, vomiting and diarrhoea to severe epigastric and abdominal pain. Third-stage larvae of A. simplex are found in the body cavity, musculature and various organs, P. decipiens occur mainly in the fish musculature......The anisakid nematodes Anisakis simplex (Rudolphi, 1809), Pseudoterranova decipiens (Krabbe, 1878) and Contracaecum osculatum (Rudolphi, 1802) occur as third-stage larvae in marine fish products and may infect consumers ingesting raw or under-cooked fish products. Clinical symptoms associated...... – including euphausiids, copepods and amphipods – feed on these larvae, become infected and serve as intermediate hosts. A range of fish species may serve as transport hosts following ingestion of infected invertebrates and the final stage develops after two additional moults in the stomach of marine mammals...

  10. Isolasi dan Identifikasi Senyawa Flavonoid Ekstrak Etanol Buah Naga Merah (Hylocereus polyrhizus (F.A.C.Weber Briton & Rose

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    Siti Nuari

    2017-12-01

    Full Text Available Telah dilakukan penelitian mengenai isolasi dan identifikasi senyawa flavonoid dari ekstrak etanol buah naga merah (Hylocereus polyrhizus (F.A.C.Weber Briton & Rose.  Ekstrak buah naga merah diperoleh melalui maserasi serbuk buah naga merah dengan pelarut etanol 96%. Ekstrak etanol yang diperoleh di partisi dengan metode partisi cair-cair menggunakan pelarut n-heksana, etil asetat dan air. Hasil partisi ekstrak etil asetat  kemudian dilakukan pemisahan dengan Kromatografi vakum cair, sedangkan ekstrak air dihidrolisis terlebih dahulu dengan HCl lalu dipartisi dengan etil asetat (fraksi etil asetat. Berdasarkan  hasi pemurnian ekstrak etil asetat dan fraksi etil asetat dengan KLT Preparatif diperoleh 5 isolat tetapi hanya isolat 3 yang positif senyawa flavonoid. Hasil spektroskopi UV-Vis isolat 3 menghasilkan puncak pada 330 nm (pita I dan 280 nm (pita II, sedangkan pada penambahan pereaksi geser tidak mengalami pergeseran batokromik dan hipsokromik. Berdasarkan data-data yang diperoleh isolat 3 diduga merupakan golongan senyawa flavanon.

  11. Descripción de la rotiferofauna presente en Ciénaga La Redonda, Ciénaga La Luna, Ciénaga Pajaral y Canal Dragado durante la época lluviosa. Complejo de Pajarales, Departamento de Magdalena, Colombia

    Directory of Open Access Journals (Sweden)

    Juan Sebastián Celis Melo

    2007-08-01

    Full Text Available La Composición y Abundancia de Rotíferos presentes durante la época lluviosa en las ciénagas de La Redonda, ciénaga La Luna, ciénaga Pajaral y Canal Dragado (Magdalena, Colombia fueron determinadas utilizando el conteo microscópico. La colecta de las muestras se llevó a cabo los días 15 septiembre, 29 septiembre, 23 octubre, 16 noviembre, 23 noviembre y 12 diciembre de 2006, mediante una botella de tipo Van Dorn. Paralelamente en cada estación se tomaron datos de las variables: salinidad, temperatura, pH y oxígeno empleando sondas multiparámetro WTW. La diversidad de rotíferos fue calculada empleando el índice de Shannon-Wienner H’ (log10 comparando entre estaciones y fechas de muestreo para establecer variaciones a lo largo del periodo de estudio, además se relacionaron gráficamente las variables fisicoquímicas con los valores de diversidad calculados empleando un valor de 0,05 y un intervalo de confianza del 95%. En total, fueron encontradas 20 especies pertenecientes a las familias Brachionidae, Lecanidae, Filiniidae, Synchaetidae, Hexarthriidae y Testudinellidae, siendo las familias Brachionidae y Lecanidae las más abundantes. La relación entre la diversidad encontrada y las variables fisicoquímicas medidas indican que la salinidad es la principal responsable de la diversidad de rotíferos durante el periodo de estudio. En conclusión, la reapertura de los canales de comunicación entre el río Magdalena y las ciénagas del Complejo de Pajarales han disminuido los valores de salinidad sugiriendo un aumentó en la diversidad de rotíferos. Palabras clalve: rotífero, laguna costera, disturbio ecosistémico, salinidad, complejo pajarales.

  12. New application of two Antarctic macroalgae Palmaria decipiens and Desmarestia menziesii in the synthesis of gold and silver nanoparticles

    Science.gov (United States)

    González-Ballesteros, N.; González-Rodríguez, J. B.; Rodríguez-Argüelles, M. C.; Lastra, M.

    2018-03-01

    In this study, two Antarctic macroalgae (Rhodophyta Palmaria decipiens and Phaeophyta Desmarestia menziessi) were selected in order to report their use for the biosynthesis of nanomaterials. Two aqueous extracts of the macroalgae were prepared and their reducing activity, total phenolic content and DPPH scavenging activity were determined, showing that brown seaweed has higher antioxidant activity than red seaweed. Aqueous extracts were used as an eco-friendly, one-pot synthetic route to obtain gold and silver nanoparticles acting both as reducing and stabilizing agents. The nanoparticles obtained were characterized by UV-Vis spectroscopy and Transmission electron microscopy (TEM), demonstrating the formation of gold and silver nanoparticles with mean diameters of 36.8 ± 5.3 and 11.5 ± 3.3 nm for Au@PD and Au@DM and 7.0 ± 1.2 nm and 17.8 ± 2.6 nm in the case of Ag@PD and Ag@DM. Lastly, functional groups of the biomolecules present in the extracts were characterized by Fourier transform infrared spectra (FTIR) prior to, and after, the synthesis of the nanoparticles, in order to obtain information about the biomolecules involved in the reducing and stabilization process.

  13. Geomorphology of Dra Abu el-Naga (Egypt): The basis of the funerary sacred landscape

    Science.gov (United States)

    Bardají, T.; Martínez-Graña, A.; Sánchez-Moral, S.; Pethen, H.; García-González, D.; Cuezva, S.; Cañaveras, J. C.; Jiménez-Higueras, A.

    2017-07-01

    A geological and geomorphological analysis has been performed in the necropolis of Dra Abu el-Naga in order to understand the role played by these two factors in the development of the sacred landscape. The investigation focuses upon two aspects of the development of the necropolis, the selection criteria for tomb location and the reconstruction of the ancient funerary landscape. Around 50 tombs were surveyed, analysing the characteristics of their host rock and classifying them according to a modified Rock Mass Rating Index, in order to understand how rock quality affected tomb construction. This analysis resulted in the definition of five rock-quality classes (I to V) from very good to very poor rock. The geological study also resulted in a proposed geological-geomorphological model for the evolution of this zone of the Theban necropolis that complements previous works by other authors. Due to the lack of precise dating evidence this chronology is a relative one and is based on the chronology given by other authors for similar deposits and events. Two catastrophic events, represented by mega-landslides, have been identified, the first one predates the deposition of early Pleistocene fluvial deposits, and the second one possibly occurred during the middle-late Pleistocene. Two weathering surfaces developed under wetter than present climatic conditions and have been tentatively correlated to the mid-late Pleistocene humid period and the African-Humid Period (early-mid Holocene).

  14. Feeding of a pelagic chaetognath, Sagitta friderici Ritter-Záhony off Ubatuba region (São Paulo, Brazil

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    Luz Amelia Vega-Pérez

    1992-01-01

    Full Text Available The diet of Sagitta friderici off Ubatuba region, São Paulo State, was studied in March, 1989. Specimens were collected with a closing-net during three days at six hours' intervals (00:00; 06:00; 12:00; 18:00 h, at a fixed station of 38 m depth. The population was composed basically by young stages (O-II. A total of 3175 specimens were examined but only 760 contained preys in their guts. Copepods were the main constituent of food eaten (79.86%. There was a preference for the genera Paracalanus, Oncaea, Corycaeus and for crustacean nauplii. Other zooplanktonic groups such as Annelida, Urochordatha, and Mollusca were also found in the gut. Cannibalistic behavior occurred in 2.66% of the samples. In S. friderici the food was selected by size and was a direct function of the predator size. Younger stages (O-I selected small prey, whereas older stages (II preferred larger preys. Specimens collected above the thermocline exhibited higher feeding intensity (FCR during the night periods.Espécimens de Sagitta friderici foram coletados numa estação fixa de 38 m de profundidade, ao largo de Ubatuba, Estado de São Paulo, em março de 1989. Arrastos verticais, acima e abaixo da termoclina, foram feitos com rede de fechamento (50 cm de diâmetro de boca e malha de 0.200 mm durante três dias consecutivos e em intervalos de seis horas. O estudo de 3175 indivíduos, nos estágios de O-IV, revelou que 2415 apresentaram o trato digestivo vazio e 760 com algum tipo de alimento. Destes últimos, 283 continham material amorfo e os 473 restantes de 1 a 3 presas. Das 488 presas identificadas, 99,74% estavam localizadas na região posterior do trato digestivo e 0,26% na região anterior. A dieta de S. friderici esteve constituída de Crustácea, Annelida, Urochordata, Chaetognatha e Mollusca. Dentre os Crustácea, os Copepoda foram os mais abundantes, predominando os Calanoida e Cyclopoida. O estágio 0 de S. friderici teve preferência pelos náuplios de crust

  15. Helical Tomography of an Accretion Disk by Superhump Light Curves of the 2001 Outburst of WZ Sagittae

    Science.gov (United States)

    Osaki, Yoji

    2003-06-01

    A new method for analyzing complex superhump light curves for the 2001 outburst of WZ Sagittae is proposed. The complexity arises because intrinsically time-varying and non-axisymmetric distributions of superhump light sources are coupled with the aspect effects around the binary orbital phase because of its high orbital inclination. The new method can disentangle these complexities by separating the non-axisymmetric spatial distribution in the disk from the time variation with the superhump period. It may be called a helical tomography of an accretion disk because it can reconstruct a series of disk images (i.e., disk's azimuthal structures) at different superhump phases. The power spectral data of superhump light curves of the 2001 outburst of WZ Sge by Patterson et al. (2002, PASP, 114, 721) are now interpreted under a new light based on the concept of helical tomography, and the azimuthal wave numbers of various frequency modes are identified. In particular, a frequen! cy component, nω0 - Ω, where ω0 and Ω are the orbital frequency and a low frequency of the apsidal precession of the eccentric disk, is understood as an (n - 1)-armed traveling wave in the disk. A vigorous excitation of a wave component of cos(2Θ - 3ω0t) in the first week of the superhump era of WZ Sge, where Θ is the azimuthal angle, supports Lubow's (1991, AAA 54.064.175) theory of non-linear wave coupling of the eccentric Lindblad resonance for the superhump phenomenon. This method can in principle be applied to other SU UMa stars with high orbital inclination if light curves are fully covered over the beat cycle.

  16. HALLAZGO DE MERCURIO EN PECES DE LA CIÉNAGA DE AYAPEL, CÓRDOBA, COLOMBIA

    Directory of Open Access Journals (Sweden)

    José Marrugo

    2007-08-01

    Full Text Available Objetivo. Determinar las concentraciones de mercurio total (Hg-T en algunasespecies de peces de la ciénaga de Ayapel (Colombia. Materiales y métodos. Losmuestreos fueron realizados desde Julio de 2004 a Junio de 2005, incluyendo lasépocas seca y lluviosa. Las muestras fueron analizadas por espectrometría deabsorción atómica por vapor frío después de digestión ácida. Resultados. Lasconcentraciones más altas de Hg-T se observaron para las muestras analizadas dela especie carnívora Ageneiosus caucanus (0.504±0.103 mg Hg kg-1 peso fresco, ylas menores concentraciones en la especie Iliófaga Prochilodus magdalenae(0.130±0.056 mg Hg kg-1 peso fresco. Las concentraciones más altas fueronencontradas en las muestras de la época seca. Los niveles promedio de Hg-T en lasmuestras de peces no excedieron el límite para consumo humano establecido por laOrganización Mundial de la Salud (OMS, 0.5 mg Hg Kg-1 peso fresco. Conclusiones.La evaluación del riesgo basado en el índice de peligrosidad sugiere que el consumode 0.12 kg de pescado por día en la población humana (principalmente carnívorospodría incrementar el riesgo de envenenamiento por mercurio en la población local.

  17. Phytochemical Profile, Chemotaxonomic Studies, and In Vitro Antioxidant Activities of Two Endemisms from Madeira Archipelago: Melanoselinum decipiens and Monizia edulis (Apiaceae).

    Science.gov (United States)

    Spínola, Vítor; Castilho, Paula C

    2016-10-01

    Melanoselinum decipiens and Monizia edulis (Apiaceae) are two endemic plants from Madeira archipelago, phytochemical compositions of which remains little explored, despite their use in folk medicine. Using liquid chromatography with diode array and electrospray ionization/mass spectrometry analysis, their polyphenolic profile was established for the first time. Fifty-six compounds were identified with 5-O-caffeoylquinic acid, quercetin-O-(malonyl)hexoside, luteolin diacetyl, and quercetin-O-hexoside being the major constituents in the leaves of both plant species (≥ 0.76 mg/g of dry extract). Principal component analysis provided a suitable tool to differentiate targeted plants. Naringenin-6,8-di-C-glucoside, quercetin 3-O-pentosylhexoside, and 1,5-O-dicaffeoylquinic acid can be used as discriminatory taxonomic/geographical markers for M. edulis subspecies from Madeira and Porto Santo populations. This methodology of using polyphenols as chemotaxonomic markers proved to be useful for identification of plant species since the results are consistent with previous taxonomical data. The free-radical scavenging activities of the M. decipiens extracts proved to be higher than those of M. edulis, which correlated well with their phenolic content (R 2  > 0.906). © 2016 Wiley-VHCA AG, Zürich.

  18. Molecular identification, morphological characterization and new insights into the ecology of larval Pseudoterranova cattani in fishes from the Argentine coast with its differentiation from the Antarctic species, P. decipiens sp. E (Nematoda: Anisakidae).

    Science.gov (United States)

    Timi, Juan T; Paoletti, Michela; Cimmaruta, Roberta; Lanfranchi, Ana L; Alarcos, Ana J; Garbin, Lucas; George-Nascimento, Mario; Rodríguez, Diego H; Giardino, Gisela V; Mattiucci, Simonetta

    2014-01-17

    Larvae of the genus Pseudoterranova constitute a risk for human health when ingested through raw or undercooked fish. They can provoke pseudoterranovosis in humans, a fish-borne zoonotic disease whose pathogenicity varies with the species involved, making their correct specific identification a necessary step in the knowledge of this zoonosis. Larvae of Pseudoterranova decipiens s.l. have been reported in several fish species from off the Argentine coasts; however, there are no studies dealing with their specific identification in this region. Here, a genetic identification and morphological characterization of larval Pseudoterranova spp. from three fish species sampled from Argentine waters and from Notothenia coriiceps from Antarctic waters was carried out. Larvae were sequenced for their genetic/molecular identification, including the mitochondrial cytochrome c oxidase subunit II (mtDNA cox2), the first (ITS-1) and the second (ITS-2) internal transcribed spacers of the nuclear ribosomal DNA, and compared with all species of the P. decipiens (sensu lato) species complex (sequences available in GenBank). Further, adults of Pseudoterranova spp. from the definitive host, the southern sea lion, Otaria flavescens, from Argentine and Chilean coasts were sequenced at the same genes. The sequences obtained at the ITS-1 and ITS-2 genes from all the larvae examined from fish of Argentine waters, as well as the adult worms, matched 100% the sequences for the species P. cattani. The sequences obtained at mtDNA cox2 gene for Antarctic larvae matched 99% those available in GenBank for the sibling P. decipiens sp. E. Both MP and BI phylogenetic trees strongly supported P. cattani and P. decipiens sp. E as two distinct phylogenetic lineages and depicted the species P. decipiens sp. E as sister taxon to the remaining taxa of the P. decipiens complex. Larval morphometry was similar between specimens of P. cattani from Argentina, but significantly different from those of P

  19. Constraints on the evolution of the Naga Hills: from disparate origins to tectonic amalgamation

    Science.gov (United States)

    Aitchison, J. C.; Clarke, G. L.; Ireland, T. R.; Ao, A.; Bhowmik, S. K.; Kapesa, L.; Roeder, T.; Stojanovic, D.; Kachovich, S.

    2016-12-01

    Recent field expeditions supported by the Australia-India Strategic Research Fund (AISRF07021) have allowed a collaborative team of Australian and Indian geologists to examine, in detail, regions along the border between Nagaland and Manipur in India and Myanmar. This area has previously been little explored and we present new field and laboratory observations. The Myanmar microplate has been dextrally translated over 480 km northwards along Sagaing Fault system during the Miocene. Clearly it did not originate where it presently lies but how far it has travelled remains uncertain. The Indo-Myanmar ranges include the Naga Hills that are dominated by Cenozoic sediments, which have been thrust westwards (in present-day coordinates). They structurally overlie an Indian passive-margin sequence that includes the Gondwana break-up rift-drift counterpart to parts of the NW Shelf of Australia. Near the Indo-Myanmar border this giant imbricate thrust stack also contains sheets of ophiolitic mélange. The ophiolite is heavily disrupted and subsequent to this dismemberment it has been overlain by a succession of Eocene shallow marine shelf sediments; the Phokphur Formation. Further east a succession of high-grade metamorphic units is also thrust westwards over the ophiolite. Well-preserved radiolarian microfossils and U/PB SHRIMP data provide important new age constraints. While superficially it appears that rocks in this area can be correlated with units known from the Himalaya in fact this is problematic. As oceans to the north and west of Australia have opened, grown and been recycled through subduction various continental fragments that originated as part of Gondwana have departed and, with time, transferred to Asia. They have not necessarily all followed the same tectonic pathways. The area lies to the east of the Namche Barwa syntaxis and tectonic reconstructions indicate it has not directly participated in continent-continent collision. Indeed, stratigraphic and

  20. Geochemical characteristics of mafic and ultramafic rocks from the Naga Hills Ophiolite, India: Implications for petrogenesis

    Directory of Open Access Journals (Sweden)

    Ajoy Dey

    2018-03-01

    Full Text Available The Naga Hills Ophiolite (NHO represents one of the fragments of Tethyan oceanic crust in the Himalayan Orogenic system which is exposed in the Phek and Kiphire districts of Nagaland, India. The NHO is composed of partially serpentinized dunite, peridotite, gabbro, basalt, minor plagiogranite, diorite dyke and marine sediments. The basalts are mainly composed of fine grained plagioclase feldspar, clinopyroxene and orthopyroxene and show quenching and variolitic textures. The gabbros are characterized by medium to coarse grained plagioclase, orthopyroxene and clinopyroxene with ophitic to sub-ophitic textures. The ultramafic cumulates are represented by olivine, Cpx and Opx. Geochemically, the basalts and gabbros are sub-alkaline to alkaline and show tholeiitic features. The basalts are characterized by 44.1–45.6 wt.% of SiO2 with 28–38 of Mg#, and the gabbros by 38.7–43.7 wt.% of SiO2, and 26–79 of Mg#. The ultramafic rocks are characterized by 37.4–52.2 wt.% of SiO2, and 80–88 of Mg#. In multi-element diagrams (spidergrams both basalts and gabbros show fractionated trends with strong negative anomalies of Zr, Nb, Sr and a gentle negative anomaly of P. However, the rare earth element (REE plots of the basalts and gabbros show two distinct patterns. The first pattern, represented by light REE (LREE depletion, suggests N-MORB features and can be interpreted as a signature of Paleo-Tethyan oceanic crust. The second pattern, represented by LREE enrichment with negligible negative Eu anomaly, conforms to E-MORB, and may be related to an arc tectonic setting. In V vs. Ti/1000, Cr vs. Y and AFM diagrams, the basalts and gabbros plot within Island Arc Tholeiite (IAT and MORB fields suggesting both ridge and arc related settings. The ultramafic rocks exhibit two distinct patterns both in spidergrams and in REE plots. In the spidergram, one group displays highly enriched pattern, whereas the other group shows near flat pattern compared

  1. Productividad primaria y sustancias húmicas en la ciénaga El Eneal, San Onofre Sucre-Colombia

    Directory of Open Access Journals (Sweden)

    Elkin Libardo Ríos

    2009-01-01

    Full Text Available Entre mayo de 2003 y abril de 2004, se determinó la productividad primaria y el contenido de sustancias húmicas en la ciénaga El Eneal. En la zona pelágica se dispusieron los ensayos de medición de la productividad y se tomaron muestras de agua para el análisis de las sustancias húmicas. El sistema cenagoso del Eneal, presentó un estado oligotrófico, con una reducida producción en la época de lluvia. En contraste en época seca, cuando disminuye el nivel de agua, la producción aumentó y los niveles de oxígeno se incrementaron, debido a la presencia de la macrófita sumergida Najas guadalupensis. Esto, se asoció a la baja presencia de plancton y de nutrientes biodisponibles.

  2. Systematic revision of the Parvoscincus decipiens (Boulenger, 1894) complex of Philippine forest skinks (Squamata: Scincidae: Lygosominae) with descriptions of seven new species.

    Science.gov (United States)

    Linkem, Charles W; Brown, Rafe M

    2013-01-01

    Analysis of external morphological characters, color pattern, and DNA sequence data, plus consideration of biogeographical patterns, leads us to the hypothesis that the Parvoscincus decipiens complex of Philippine forest skinks consists of a minimum of eight highly divergent, phenotypically distinct, cohesive evolutionary lineages. We rectify this taxonomic underestimation of species diversity with formal descriptions of seven new species (P. abstrusus sp. nov., P. agtorum sp. nov., P. arvindiesmosi sp. nov., P aurorus sp. nov., P banahaoensis sp. nov., P. jimmymcguirei sp. nov., and P. palaliensis sp. nov.) and highlight geographical sampling deficiencies, which, if addressed with additional fieldwork, should lead to additional new species discoveries. Due to the difficulty of identifying non-overlapping differences in scalation on similarly sized, small-bodied skinks, species level diversity in diminutive Philippine forest skinks is undoubtedly substantially underestimated.

  3. The roles of geography and founder effects in promoting host-associated differentiation in the generalist bogus yucca moth Prodoxus decipiens.

    Science.gov (United States)

    Darwell, C T; Fox, K A; Althoff, D M

    2014-12-01

    There is ample evidence that host shifts in plant-feeding insects have been instrumental in generating the enormous diversity of insects. Changes in host use can cause host-associated differentiation (HAD) among populations that may lead to reproductive isolation and eventual speciation. The importance of geography in facilitating this process remains controversial. We examined the geographic context of HAD in the wide-ranging generalist yucca moth Prodoxus decipiens. Previous work demonstrated HAD among sympatric moth populations feeding on two different Yucca species occurring on the barrier islands of North Carolina, USA. We assessed the genetic structure of P. decipiens across its entire geographic and host range to determine whether HAD is widespread in this generalist herbivore. Population genetic analyses of microsatellite and mtDNA sequence data across the entire range showed genetic structuring with respect to host use and geography. In particular, genetic differentiation was relatively strong between mainland populations and those on the barrier islands of North Carolina. Finer scale analyses, however, among sympatric populations using different host plant species only showed significant clustering based on host use for populations on the barrier islands. Mainland populations did not form population clusters based on host plant use. Reduced genetic diversity in the barrier island populations, especially on the derived host, suggests that founder effects may have been instrumental in facilitating HAD. In general, results suggest that the interplay of local adaptation, geography and demography can determine the tempo of HAD. We argue that future studies should include comprehensive surveys across a wide range of environmental and geographic conditions to elucidate the contribution of various processes to HAD. © 2014 European Society For Evolutionary Biology. Journal of Evolutionary Biology © 2014 European Society For Evolutionary Biology.

  4. THE EFFECTS OF TOURISM ON VERNACULAR HOUSES IN TRADITIONAL VILLAGE: THE COMPARISON BETWEEN KAMPUNG NAGA IN WEST JAVA AND DESA KANEKES IN BANTEN

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    Muhammar Khamdevi

    2016-07-01

    Full Text Available ABSTRACT. Tourism is one of the significant economic sectors in Indonesia. It has major, economic, social and environmental impacts. However, it may become unsustainable tourism, if its management ignores environmental issues, especially the degradation of the cultural heritage environment. Kampung Naga in West Java and Desa Kanekes in Banten are two cultural heritage villages that became tourist attractions in Indonesia. Their vernacular houses experienced several shifts and changes since then. How are the effects of tourism in Kampung Naga and Desa Kanekes on their vernacular houses? Are there any differences between both of them? A comparative approach is adopted in investigating the cases. This study is expected to find the implementation of current tourism in both villages and its effects on vernacular houses. The study shows that unsustainable tourism is occurred in both locations and result several concerned effects on their vernacular houses. Keywords: sustainable tourism, cultural heritage, vernacular architecture ABSTRAK. Pariwisata adalah salah satu sektor ekonomi penting di Indonesia. Ia memiliki dampak ekonomi, sosial dan lingkungan. Meskipun begitu, ia menjadi pariwisata tidak berkelanjutan, jika pengelolaannya mengabaikan isu-isu lingkungan, terutama penurunan kualitas lingkungan warisan budaya. Kampung Naga di Jawa Barat dan Desa Kanekes di Banten adalah dua kampung warisan budaya yang menjadi tujuan wisata di Indonesia. Rumah-rumah vernakularnya mengalami pergeseran dan perubahan sejak saat itu. Bagaimana pengaruh pariwisata di Kampung Naga dan Desa Kanekes pada rumah-rumah vernakularnya? Apakah ada perbedaan di antara keduanya? Pendekatan komparatif dipakai untuk menyelidiki kasus tersebut. Kajian ini diharapkan untuk menemukan pelaksanaan pariwisata saat ini di kedua kampung dan pengaruhnya pada rumah-rumah vernakularnya. Hasil kajian menunjukkan bahwa pariwisata yang tidak berkelanjutan terjadi di kedua lokasi dan

  5. Evolución de la cultura ciudadana: Análisis comparativo del caso de ciénaga, magdalena periodos 2011 y 2014

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    Daniela Andrea Figueroa González

    2015-07-01

    Full Text Available This article presents the results obtained in 2011 and 2014, showing the evolution that has taken the civic culture of the municipality of Ciénaga, Magdalena, through four modules that develop topics such as coexistence, the tax culture, citizen participation, use of public spaces, among others; with a view to making changes in the behavior of citizens in the municipality and thereby pose a publiceducation aimed at strengthening citizen potential political culture. Keywords: Culture, democracy, participation, citizenship

  6. Variasi Temperatur dan Waktu Tahan Kalsinasi terhadap Unjuk Kerja Semikonduktor TiO2 sebagai Dye Sensitized Solar Cell (DSSC dengan Dye dari Ekstrak Buah Naga Merah

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    Sahat M. R. Nadaek

    2012-09-01

    Full Text Available Salah satu energi alternatif yang mempunyai potensi sumber energi yang sangat besar untuk mencegah terjadinya krisis energi namun sering kali terabaikan adalah sinar matahari. Oleh karena itu, penelitian ini dilakukan untuk  menghasilkan prototype dalam mengkonversi energi cahaya matahari menjadi energi listrik. Dye Sensitized Solar Cell (DSSC telah difabrikasi dengan menggunakan serbuk Titanium Dioksida (TiO2 yang dilapisi ke kaca Indium Tin Oxide dan diberi variasi temperatur 350oC, 450oC, dan 550oC dengan waktu tahan kalsinasi 30 dan 60 menit yang kemudian disensitisasi ke dalam larutan dye ekstrak buah naga merah (Hylocereus polyrhizus. DSSC di-assembling dengan coating Pd/Au yang telah di-sputtering ke kaca Indium Tin Oxide yang selanjutnya ditetesi dengan larutan elektrolit. Kemudian lapisan TiO2 tersebut dikarakterisasi menggunakan uji (SEM dan (XRD. Luas permukaan aktif partikel diidentifikasi dengan menggunakan BET analyzer. Dari hasil XRD dapat diketahui struktur kristalnya tetragonal. Hasil SEM menunjukkan bahwa bentuk partikel TiO2 adalah spherical. Untuk luas permukaan aktif yang dihasilkan menunjukkan nilai yang berbanding lurus dengan kenaikan nilai kelistrikan DSSC buah naga. Dari uji kelistrikan didapatkan hasil optimum pada temperatur 550oC dan waktu tahan 60 menit dengan voltase 562 mV, kuat arus 0.307 mA, dan memiliki efisiensi sebesar 0.089%. Kata kunci: Dye ekstrak buah naga merah, dye sensitized solar cell, temperatur kalsinasi, TiO2, waktu tahan kalsinasi.

  7. Estudio de la morfometría de las sagittae en poblaciones de sciaenidos marinos de aguas cálidas del Perú y aguas templado-frías de Argentina

    OpenAIRE

    Volpedo, A.

    2001-01-01

    Otoliths (sagitta, asteriscus and lapillus)are complex structures composed of calcium carbonate, other minerals, and a protein matrix. Otoliths are located in the internal ear of the teleost fishes. The shape and structure of otoliths are specific for each species. For this reason, otoliths are used to identify species in biological and ecological studies.Sciaenids conform a group of fishes of commercial importance, so the handling of this resource is a high-priority topic for the local and n...

  8. La contaminación por metales pesados en la Ciénaga Grande de Santa Marta, Caribe colombiano La contaminación por metales pesados en la Ciénaga Grande de Santa Marta, Caribe colombiano

    Directory of Open Access Journals (Sweden)

    Campos C. Néstor Hernando

    1990-09-01

    Full Text Available Se dan los resultados de los estudios sobre la contaminación por metales pesados en la Ciénaga Grande de Santa Marta. Las determinaciones se realizaron en el material en suspensión, en los bivalvos Crassostrea rhizophorae e Isognomon alatus y en los peces Gathorops spixii y Ariopsis bonillai. Los análisis de los metales Cd, Zn y Cu en el material en suspensión permitieron determinar que las mayores descargas de estos metales se suceden principalmente desde el Río Magdalena a través del Canal del Clarín y de los ríos que fluyen del piedemonte de la Sierra Nevada de Santa Marta. La comparación de los contenidos en bivalvas permiten determinar la importancia de estos organismos como bioindicadores. Los análisis en las dos especies de peces mostraron una diferenciación en la capacidad de acumulación entre una y otra.  Al comparar los contenidos de metales entre los diferentes tipos de muestras con los cambios en los contenidos en el material en suspensión y la salinidad, se observó que estos dos parámetros son principalmente los que controlan la biodisponibilidad de los metales y además afectan los procesos fisiológicos de los organismos, aumentando o disminuyendo la capacidad de bioacumulación. Results of the studies of heavy metals pollution in the Ciénaga Grande de Santa Marta are provided. The determinations have been done on the suspended matter, on the bivalves Crassostrea rhizophorae and Isognomon alatus, and in the fishes Gathorops spixii and Ariopsis bonillai. The analysis of Cd, Zn and Cu in the suspended matter led to determine that the discharges come principally from the Río Magdalena through the Canal del Clarín and the rivers coming from the Sierra Nevada de Santa Marta. Comparisons of the concentration in bivalves show the importance of this organisms as bioindicators. The analysis in both fish species show a difference in their capacity of accumulation. Comparison of the metals contents between different types

  9. Establishing the relative importance of sympatric definitive hosts in the transmission of the sealworm, Pseudoterranova decipiens: a host-community approach

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    F Javier Aznar

    2001-11-01

    Full Text Available The importance of a given host to a particular parasite can be determined according to three different criteria: host preference, host physiological suitability and host contribution to transmission. Most studies on the sealworm Pseudoterranova decipiens have focussed on the latter factor, but few attempts have been made to develop a quantitative transmission model evaluating the relative importance of each host. The purpose of this study was to propose a flow-chart model to study sealworm transmission within a seal community. The model was applied to hypothetical data of four seal species acting as definitive hosts of P. decipiens sensu stricto in eastern Canada: harp seal Phoca groenlandica, harbour seal P. vitulina, grey seal Halichoerus grypus and hooded seal Cystophora cristata. The dynamics of the model was studied using population estimates from 1990 to 1996. To illustrate the interrelationship of the seal populations in the flow dynamics, the model’s behaviour was explored by manipulation of the harp seal population size. The results showed that grey seals accounted by far for most transmission from and to the seals. The harbour seal population also sustained a biologically significant proportion of the flow, whereas the role of hooded and harp seals seemed negligible despite their large population sizes. The hypothetical removal of the harp seal population resulted in small increases in the relative flows to the other seals. These results conform to previous qualitative assessments on the relative importance of these seal species in sealworm transmission. The model provided some heuristic rules useful to understand transmission patterns. The data suggested that the harbour seal population should be about twice that of the grey seals to account for a larger share of transmission than grey seals. Although this is unlikely to occur at a large geographic scale, harbour seals outnumber grey seals in some areas and, therefore, the role of

  10. Contracaecum sp (ANISAKIDAE EN EL PEZ Hoplias malabaricus, CAPTURADO EN LA CIÉNAGA GRANDE DE LORICA, CÓRDOBA

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    Sandra Pardo C

    2008-08-01

    Full Text Available Objective. To determine the presence of Contracaecum nematodes in the fish Hoplias malabaricus (moncholo. Materials and methods. A total of 45 fish, captured between July. 2006 and May, 2007 were sampled. In the laboratory, biometric analysis was done on each fish; the fish was gutted and examined for nematodes. Skeletal musculature was extracted, dissected in thin layers and observed with ultraviolet light to evaluate the presence of nematodes. Nematodes were counted, isolated and fixed in formaldehyde. Nematodes tissues were cleared in order to visualize their internal structures, and morphometric keys were used to confirm their identification. Results. Nematodes were found only in viscera and identified as Contracaecum spp in the third larval state (L3. Prevalence was 100% with light (88.9% and moderate (11.1% infestation. The condition factor value was 0.036±0.04, the hepatosomatic, branchiasomatic and somatic spleen indices were 1.65±0.37, 3.40±0.43, 0.09±0.04, respectively. There was no significant relationship between these indices and the parasite index (r0.05. Conclusions. Moncholo sampled from Ciénaga Grande de Lorica were infected with Contracaecum spp. The condition factor index and the somatic organ indices were not significant predictors of infection.

  11. Review of experimental and natural invertebrate hosts of sealworm (Pseudoterranova decipiens and its distribution and abundance in macroinvertebrates in eastern Canada

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    David J Marcogliese

    2001-11-01

    Full Text Available Experimental and natural invertebrate intermediate hosts of sealworm (Pseudoterranova decipiens as well as transmission experiments of sealworm from invertebrates to fish are reviewed and summarized. Experimental hosts include copepods, mysids, cumaceans, isopods, amphipods, decapods, annelids, and molluscs. Invertebrates collected from eastern Canada between 1989 and 1995 were checked for nematode infections by microscopic examination of dissected animals or enzymatic digestion of bulk samples. Third-stage larval sealworm were found in mysids (Neomysis americana, Mysis stenolepis from Passamaquoddy Bay, the Bras d’Or Lakes, inshore Cape Breton, Sable Island and Sable Island Bank. Infected amphipods (Amphiporeia virginiana, Americorchestia megalophthalma, Gammarus spp. were found only on Sable Island. Typical infection rates in macroinvertebrates were 1-4/1000. No sealworm infections were found in approximately 18,000 amphipods examined from Sable Island Bank, the site of the most heavily infected fishes in eastern Canada. In Wallace Lake, a brackish pond on Sable Island, infection rates were much higher in mysids than in amphipods. Estimates of rates of transmission of sealworm from invertebrates to fish were derived from infection levels in Wallace Lake and feeding experiments involving sticklebacks and invertebrate prey. It is concluded that mysids may be much more important than amphipods in transmitting sealworm to fish hosts.

  12. Residuos de plaguicidas organoclorados en Rhizophora mangle y Avicennia germinans en la Ciénaga Grande de Santa Marta, Caribe Colombiano

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    Espinosa Luisa F.

    1998-06-01

    Full Text Available Residues of the organochlorine compounds lindane, heptachlor, aldrin, pp'DDE, pp'DDD y pp'DDT were determined in leaves of two species of mangrove (Rhízophora mangle and Avícennía germínans from the Ciénaga Grande de Santa Marta. Samples were made quarterly (between March and December 1993, at tour stations at the Ciénaga and at one station in Bahía de Chengue (Parque Nacional Natural Tayrona. Measurements were made usinq gas-liquid chromatography. In both ecosystems the two species are accumulating all the six cornpounds analyzed, as well as other indeterminate organochlorines. The greatest concentrations were found for lindane with maximum values of 15,9 ng/g (dry weight. For lindane, heptachlor and aldrin the concentrations were significantly different only between climatic periods. The highest concentrations were obtained for the dry season. The concentration factor by species was calculated and it was determined that the mangroves are accumulating organochlorine compounds in greatest proportion from sedimento.Se determinaron los contenidos de residuos de los plaguicidas organoclorados lindano, heptacloro, aldrin, pp'DDE, pp'DDD Y pp'DDT en hojas de dos especies de mangle (Rhízophora mangle y Avícennía germínans de la Ciénaga Grande de Santa Marta. Se recolectaron muestras trimestralmente (entre marzo y diciembre de 1993 en cuatro estaciones en la Ciénaga y en una estación de la Bahía de Chengue, Parque Nacional Natural Tayrona. Las determinaciones se hicieron por cromatografía gas-líquido. Se encontró que en los dos ecosistemas las dos especies de mangle están acumulando los seis compuestos analizados, además de otros compuestos organoclorados indeterminados. Las mayores concentraciones fueron las de lindano, con valores máximos de 15.9 ng/g (peso seco. Solo se encontraron diferencias significativas entre las épocas climáticas para las concentraciones de lindano, heptacloro y aldrin. Las mayores concentraciones se

  13. Florecimiento de microalgas relacionado con mortandad masiva de peces en el complejo lagunar Ciénaga Grande de Santa Marta, Caribe colombiano

    OpenAIRE

    Mancera-P., José E.; Vidal-V., Luis A.

    1994-01-01

    Entre los meses de julio y agosto de 1994 un fenómeno discontinuo de muerte masiva de peces se registró en aguas del complejo lagunar de la Ciénaga Grande de Santa Marta, Colombia. El primer evento se presentó del 15 al 19 de julio, el segundo alrededor del día 20 de agosto y el tercero entre el 26 y 31 del mismo mes. La presencia en altas concentraciones de la cianofita filamentosa Cf. Anabaenopsis sp., registrada en la literatura como altamente tóxica, podría estar relacionada con las causa...

  14. DETERMINACIÓN DE LA CALIDAD AMBIENTAL DE LA CIÉNAGA COLOMBIA CAUCASIA ­ ANTIOQUIA ­ COLOMBIA

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    Velásquez R. Jesús Oswaldo

    2008-07-01

    Full Text Available Se realizaron mediciones de 22 parámetros físicos, químicos, biológicos y evaluación de fitoplancton durante cuatro meses en tres estaciones de muestreo para caracterizar La Ciénaga Colombia, como representativa del sistema de humedales del Bajo Cauca Antioqueño, con el ánimo de proponer un método para la detección de la calidad ambiental de este tipo de ecosistemas, que permita fijar pautas para su adecuado manejo. Se analizaron los datos mediante la determinación de índices de estado trófico, contaminación e indicares bióticos, así como análisis estadísticos de componentes principales y análisis de correspondencia canónica. Los valores promedio de los índices de estado trófico evidenciaron la calidad eutrófica del ecosistema, aspecto que coincide con los índices de contaminación especialmente referido a los valores de fósforo total. Los indicadores bióticos mostraron distribución uniforme de fitoplancton, con valores bajos en cuanto a diversidad por la condición de ser humedal eutrófico, se identificaron un total de 69 especies pertenecientes a 31 géneros, 21 familias y 6 divisiones, grupos importantes y representativos en aguas naturales. Se detectó la presencia de un alto porcentaje de macrófitas producto de los sedimentos aportados por el mal uso del suelo en las áreas de influencia.

  15. Estado del arte de la limnología de lagos de planos inundables (Ciénagas en Colombia

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    Montoya Moreno Yimmy

    2011-11-01

    Full Text Available Colombia es uno de los países con mayor diversidad de especies y de ecosistemas en el planeta. Los lagos ubicados en llanuras de inundación o «ciénagas» (como comúnmente se las conoce en Colombia comprenden un tipo de ecosistema acuático, que, no obstante su elevada riqueza específica, han sido someramente estudiados. Las investigaciones básicas en estos ambientes son escasas, en su mayoría se hallan publicadas en la «literatura gris» y no existe una compilación actualizada de los diversos aspectos que ya han sido tratados. El objetivo de este artículo es dar a conocer el estado del arte en la investigación de estos ecosistemas en Colombia, analizando las diferentes líneas de investigación que se ha desarrollado y su grado de avance. Con este fin, se examinaron 150 trabajos realizados en 86 sistemas de la llanura inundable colombiana. Los resultados muestran que la investigación en estos ecosistemas se ha enfocado principalmente (70% en los siguientes temas: potencial pesquero (19%, fitoplancton (16%, limnología física (12.4%, zooplan cton (11 .3% y es tudios de con servación (10 .8% . Aspectos im portantes como el per ifiton, las macrófitas, la microbiología ambiental y la producción primaria todavía no han sido evaluados en profundidad.

  16. Estudio de la morfometría de las sagittae en poblaciones de sciaenidos marinos de aguas cálidas del Perú y aguas templado-frías de Argentina.

    OpenAIRE

    Volpedo, Alejandra

    2001-01-01

    Los otolitos (sagitta. asteriscus y lapillus) son estructuras complejas compuestas por carbonato de calcio, otros minerales y una matriz proteica. Los otolitos se encuentran en el oído interno de los teleósteos. La forma y estructura de los otolitos son específicas de cada taxón. Por esta razón se los utiliza para identificar especies en estudios biológicos y ecológicos. Los sciaenidos son un grupo de peces de importancia comercial y el manejo de este recurso es un tema prioritario para las e...

  17. Estudio de las praderas de fanerógamas marinas en Baja California Sur (México): ciclo de vida y estrategias reproductivas de Zostera marina, Halodule wrightii y Halophila decipiens

    OpenAIRE

    Santa-María Gallegos, Noé Abraham

    2016-01-01

    Se analizó el comportamiento de la biomasa, densidad de haces, morfología y floración de tres especies de fanerógamas marinas Zostera marina L., Halodule wrightii Ascherson y Halophila decipiens Ostenfeld, en la península de Baja California Sur, una región en la que enfrentan condiciones ambientales cercanas a sus límites de tolerancia. El trabajo se compone de dos partes, la primera consiste de cuatro estudios sobre Zostera marina L., especie de afinidad templado-fría, que es dominante en la...

  18. Sealworm (Pseudoterranova decipiens) infection in grey seals (Halichoerus grypus), cod (Gadus morhua) and shorthorn sculpin (Myoxocephalus scorpius) in the Baltic Sea.

    Science.gov (United States)

    Lunneryd, Sven-Gunnar; Boström, Maria Kristina; Aspholm, Paul Eric

    2015-01-01

    The anisakid nematode Pseudoterranova decipiens, known as the sealworm or cod worm, can infect the flesh of several fish species. The parasite causes cosmetic problems for the fish industry and can cause abdominal discomfort if consumed by humans. There are only scattered studies on the abundance or distribution of the sealworm in fish and seals in the Baltic Sea. To remedy this situation, the extent of sealworm infection was investigated in cod (Gadus morhua) and shorthorn sculpin (Myoxocephalus scorpius) collected along the Swedish coast. A relative presence of the sealworm was also investigated in samples from grey seal (Halichoerus grypus) stomachs. Up to 100% of the fish were infected in some of the areas. Sculpin were generally worse infected than cod, both in abundance and prevalence of parasites. General linear models showed a significant correlation between the number of seals in an area and the prevalence of sealworms in cod. There was a sharp decrease of infected fish in areas with salinity lower than 7‰. Even though the northern Baltic proper and the southern Bothnian Sea have a high number of grey seals, only one sealworm was found in a sculpin in that region, and none in cod. In grey seal stomachs the sealworm was only found in samples from the central Baltic proper; further north, all anisakid nematodes identified in seals were Contracaecum osculatum. The results indicate that seal presence drives the distribution in the southern parts of the Baltic and that low salinity, or some other variable which correlates with salinity, limits the distribution in the northern part.

  19. Factores familiares, educativos y políticos asociados a la violencia en jóvenes del sector urbano del municipio de Ciénaga (Magdalena

    Directory of Open Access Journals (Sweden)

    Delaney Marcela Correa

    2003-01-01

    Full Text Available Este trabajo es el resultado de una investigación que busca describir y conocer los factores familiares, educativos y políticos asociados a la violencia en un grupo de jóvenes del sector urbano del municipio de Ciénaga (Magdalena. El fenómeno de la violencia ha tenido una continuidad a lo largo del tiempo y ha involucrado de manera directa e indirecta a todos los colombianos, en especial a los jóvenes, quienes son considerados como un grupo vulnerable que se enfrenta permanentemente a situaciones de marginación y discriminación. Se concibió el fenómeno desde una perspectiva multivariable, teniendo en cuenta los aspectos que hacen parte de la vida social del individuo. Para tal fin se realizó una descripción de los hechos a partir de los lineamientos de la investigación cualitativa; la recolección de la información se realizó mediante observaciones participantes, entrevistas semiestructuradas y entrevistas a grupos focales. Además, se utilizaron herramientas como diarios de campo y registros audiovisuales que permitieron ahondar en las costumbres, el hábitat, las actividades y las creencias de 100 jóvenes del municipio de Ciénaga, con edades comprendidas entre los 14 y los 26 años.

  20. Variabilidad fisicoquímica del agua en la ciénaga El Eneal, reserva natural Sanguaré municipio de San Onofre Sucre, Colombia

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    Elkin Libardo Ríos

    2008-01-01

    Full Text Available Entre mayo del 2003 y abril del 2004, en la ciénaga El Eneal, municipio de San Onofre-Sucre, se midieron los perfiles de temperatura del agua, oxígeno disuelto, pH, conductividad eléctrica y salinidad a través de un diseño nictemeral. Se encontró que el sistema es un ambiente completamente mezclado desde el punto de vista térmico debido a la acción de los vientos, de su morfología y de su ubicación cerca de la línea costera. También, se halló que esta ciénaga costera es un ambiente oligohalino en época seca; sin embargo, la mayor parte del tiempo el sistema puede considerarse como un ambiente limnético. En épocas prolongadas de sequía, la salinidad alcanzó su valor máximo de 3,4 ppm, lo cual podría constituir un factor limitante para comunidades de organismos estrictamente limnéticos.

  1. Evolución de las características socioeconómicas de los pescadores de Ciénaga, Magdalena

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    Luis Gabriel Durán-Fernández

    2016-01-01

    Full Text Available Esta investigación analiza la evolución socioeconómica de los pescadores artesanales del municipio de Ciénaga (Magdalena. La información fue recopilada  mediante la realización de dos encuestas, una en el año 2011 (397 perteneciente a un proyecto interno de la Universidad del Magdalena y la otra en el periodo 2014 (199, que permitieron construir una base de datos con información social y económica de esta población objeto de estudio. Los resultados analizados demostraron que no hay grandes avances en la situación socioeconómica de los pescadores artesanales y su núcleo familiar, en el cual los diferentes módulos de las encuestas demostraron estancamientos y desmejora en los diversos niveles de educación alcanzados por los hijos y cónyuges de los encuestados, además un deterioro en la forma de eliminación de desechos porque existe un aumento en la cantidades de hogares que afirmaron que la queman o la vierten en el rio y la ciénaga.

  2. Aspectos hidro-limnologicos en las ciénagas de chucuri y aguas negras (Magdalena medio, Colombia durante un ciclo anual

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    Gilma Stella Pedraza

    1989-01-01

    Full Text Available El presente estudio analiza caracteristicas hídrológicas-limnológicas de la estructura y funcionamiento de las ciénagas de Chucuri y Aguas Negras localizadas en la planicie aluvial del Valle Medio del río Magdalena. Se basa en seguimientos bimensuales en diez estaciones de muestreo. durante el ciclo anual: abril de 1983 a marzo de 1984. Se resalta la presencia de dos estadios definidos asociados al régimen de inundación y sequía con rasgos caracteristicos en la comunidad fitoplanctónica: abundancia. diversidad. distribución espacio-temporal y productividad primaria; en los parámetros fisico-químicos: oxígeno disuelto. temperatura. conductividad. pH y transparencia del agua; y en los principales nutrientes: fosfatos. sulfatos. nitratos y amonio.

  3. VALORACIÓN DE LA CALIDAD DEL AGUA DE TRES CIÉNAGAS DEL DEPARTAMENTO DE CESAR MEDIANTE MACROINVERTEBRADOS ASOCIADOS A EICHHORNIA CRASSIPES (PONTEDERIACEAE

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    MARÍA DEL ÁNGEL MARTÍNEZ-RODRÍGUEZ

    2014-12-01

    Full Text Available Se evalúo la calidad de agua de tres ciénagas del departamento del Cesar (Zapatosa, Mata de Palma y La Pachita mediante la caracterización de la comunidad de macroinvertebrados acuáticos asociados a la planta acuática-flotante Eichhornia crassipes (taruya, buchón. Se realizaron dos muestreos en época de aguas altas y dos en el periodo de aguas bajas. Para determinar la calidad del agua se midieron variables fisicoquímicas y se utilizaron el Índice Biótico de Polución (IBP y el Índice de Integridad Biótica de Macroinvertebrados (IIBM, este último desarrollado específicamente para las ciénagas estudiadas. Los individuos encontrados pertenecen a 15 órdenes, 34 familias y 87 morfotipos, y de ellos el orden Coleoptera fue el más diverso con 49 morfotipos (56% del total. Las familias Hydrophilidae y Dytiscidae (Coleptera, Cyclestheriidae (Branchiopoda, Chironomidae (Diptera y Planorbidae (Basommatophora fueron las más representativas en cuanto a la abundancia. Las abundancias por área fluctuaron entre 3130 ind.m-2 en Mata de Palma (27% Conchostraca y 190686 ind.m-2 en La Pachita (95% Chironomidae. El IBP presentó las mayores correlaciones con las variables fisicoquímicas, pero el IIBM fue más flexible y sensible, por lo que se recomienda su utilización.

  4. Características morfométricas de un lago de plano inundable tropical (ciénaga Hoyo, Los Bagres, Colombia

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    Yimmy Montoya Moreno

    2011-01-01

    Full Text Available En este artículo se presentan las características morfométricas de La ciénaga Hoyo Los Bagres (Colombia y las predicciones de carácter teórico derivadas. La ciénaga se caracterizó como un sistema somero con un área considerable respecto al tamaño de la columna de agua, con forma de depresión cónica convexa sin puntos de inflexión en forma en V, con un amplio desarrollo de la línea de costa lo que genera una influencia alta de la cuenca sobre el ecosistema. Presenta un valor alto del fetch y del radio dinámico y una baja profundidad relativa, factores que en conjunto favorecen una amplia pista de acción para el viento, por lo que se espera una baja tendencia a la estabilidad térmica de la columna de agua (polimixis. Desde el punto de vista del estado trófico se la puede considerar como mesotrófica, ya que presenta bajos valores de transparencia y de coeficiente de atenuación lumínica. Presenta diferencias morfométricas respecto al sistema acuático del cual hace parte, por lo que se deduce que cada cuerpo dentro del complejo posee unas características propias, las cuales no quedan definidas con el estudio del cuerpo central.

  5. A preliminary perusal of ACE I/D polymorphism with adiposity traits and blood pressure among the AO NAGAS: Does gender-dependent gene expression matter?

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    Imkongtenla Pongen

    2016-12-01

    Full Text Available This study aims to evaluate the association of gender-dependent expression of angiotensin converting enzyme gene polymorphism (I/D with adiposity markers and blood pressure among AoNagas.57AoNagas[Males (n =26; Females (n = 31; Mean Age: 30.56±7.5 and 31.9 ±8.3 1]residing in Delhi were included in this cross sectionalstudy. Anthropometric measurements and blood pressure were taken using standardized techniques. Adiposity indices viz., BMI, WHR and WHtR were computed. Body fat percentage was assessed by bioelectricimpedance technique using Tanita Body composition analyzer (T-6360. Venous blood samples were withdrawn for DNA extraction and genotyping of ACE gene (I/D polymorphism was established by polymerase chain reaction (PCR. In female participants with DD homozygote, risk of both general and central obesity as depicted by BMI, body fat percentage, WC, WHR and WHtR were higher than ID heterozygote. Risk of hypertension was found to be greater among males with DD homozygote rather than females with DD homozygote. In males, obesity was not found to be associated with hypertension in either DD or ID genotypic variants of ACE. Whereas, in females obesity was significantly and positively correlated with hypertension in both DD and ID genotype. DD homozygous form of ACE is linked with both obesity and blood pressure in females and only with blood pressure in males. This genotype-by-gender interaction gives us a facet in understanding the complex genetic basis of adiposity and blood pressure phenotypes.

  6. COLIFORMES TERMOTOLERANTES EN AGUAS DE LAS POBLACIONES COSTERAS Y PALAFÍTICAS DE LA CIÉNAGA GRANDE DE SANTA MARTA, COLOMBIA

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    Silvia Narvaez

    2008-09-01

    Full Text Available La Ciénaga Grande de Santa Marta es el sistema lagunar costero más grande e importante de Colombia y el más extenso del Caribe. En su territorio se alojan siete poblaciones carentes de un sistema de saneamiento básico adecuado, que vierten sus desechos sin ningún tipo de tratamiento directamente a la ciénaga. Teniendo en cuenta la importancia ambiental de este cuerpo de agua y con el objeto de conocer su calidad sanitaria se determinaron las concentraciones de Coliformes termotolerantes en aguas adyacentes de dos poblaciones costeras (Tasajera e isla del Rosario y tres palafiticas (Buenavista, Nueva Venecia y Trojas de Cataca durante el periodo 2004-2007. Adicionalmente, se realizaron mediciones de pH, temperatura, salinidad y oxígeno disuelto en cada sitio de muestreo. Las mayores concentraciones de Coliformes se encontraron en el palafito Trojas de Cataca, en la época seca mayor de cada año (7.800-9.000 NMP/ 100 mL y los menores niveles en la estación Buenavista (2-1.100 NMP/100mL. El patrón de comportamiento de las densidades de Coliformes en las poblaciones costeras fue similar en el tiempo y no se observó ninguna relación directa entre las variables fisicoquímicas y el grupo Coliformes. Dado lo observado, se considera importante vigilar la calidad del agua en el estuario, teniendo en cuenta que constituye una fuente potencial de riesgo para el desarrollo de las actividades económicas de la zona y para la salud de los pobladores.

  7. IUE observations of V Sagittae

    Science.gov (United States)

    Koch, R. H.; Corcoran, M. F.; Holenstein, B. D.; Mccluskey, G. E., Jr.

    1986-01-01

    Observations of the nova-like variable V Sge are discussed, and the ground-based light curve is analyzed, compensating for the component interaction effect. Low-dispersion IUE spectra indicate that interstellar reddening is smaller than suggested from visible-band observations. The UV and visible continuum are modeled by a He-rich model and by a simple accretion disk, and the UV spectrum emission lines are used to determine ionization temperatures and a lower N(e) limit. The present data are consistent with the picture of the companion to the He star being embedded in an accretion disk, with the disk being large (of dimension comparable to that of the embedding Roche lobe as a result of vigorous mass transfer) at the time of the ground-based data, and with the disk having been diminished to a radius of the order of 200 times of the neutron star, at the time of the IUE spectra.

  8. Tasas de desnitrificación en una laguna costera tropical, la Ciénaga Grande de Santa Marta, Mar Caribe, Colombia

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    Herrera Martínez Yimy

    2000-12-01

    Full Text Available The rates of denitrification were measured as flows of N₂O in two sites in the Ciénaga Grande de Santa Marta as a first step toward the identification of the patterns of this process in tropical coastal lagoons of Colombia. To find out its magnitud, samples of sediment were taken to the lab trials. The rates were related with physical and chemical variables of the sediments and the water column. The rates fluctuated between undetectable and 4305 nrnoles. mˉ² hˉ¹. The maximum flow attributed to bacterial denitrification was 38.8 nmoles.mˉ² hˉ¹. The results showthat denitrification is linked to nitrification of the sedimento It was determined that acetylene blockage assays in anoxic conditions underestimate the rates of denitrification. Apparently nitrification of sediments was blocked by the lack of oxygenand possibly because of the acetylene, which inabilited the production of NO₃ˉ for denitrification. The variations in space and time of denitrification are probably due to factors such as: salinity, porosity of the sediments, content of organic matter and O₂ concentration.Se midieron las tasas de desnitrificación como flujos de N₂O en dos sitios de la Ciénaga Grande de Santa Marta como un primer esfuerzo para identificar los patrones generales que determinan este proceso en ecosistemas lagunares costeros tropicales colombianos. Para determinar su magnitud, se realizaron ensayos de laboratorio con muestras de sedimento de la ciénaga. Estas tasas fueron relacionadas con variables físicas y químicas del sedimento y de la columna de agua. Las tasas de flujo de N₂O estuvieron entre no detectadas hasta 4305 nmoles.m⁻².h⁻¹ . El flujo máximo de N₂O, atribuido a la desnitrificación bacteriana, fue 38.8 nmoles.m⁻².h⁻¹. Los resultados indican que la desnitrificación está acoplada a la nitrificación en los sedimentos. Se estableció que la utilización de la técnica de inhibición con acetileno y la incubaci

  9. Relaciones contemporáneas y rezagadas entre variables físicoquimicas y biológicas en la Ciénaga Grande de Santa Marta, Caribe colombiano

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    Zea, S.; Giraldo-H., R.; Mancera-P., J.E.; Martínez-C., J.

    1998-01-01

    A partir de datos disponibles de cuatro estaciones de muestreo de la Ciénaga Grande de Santa Marta (Mar Caribe, Colombia), se exploraron las correlaciones cruzadas, contemporáneas y rezagadas en el tiempo, entre series quincenales de variables "biológicas" (clorofila a, producción primaria) y "fisicoquímicas" (salinidad, transparencia, nutrientes inorgánicos, nitrógeno y fósforo totales, feopigmentos, proteínas del seston). En contraste con análisis previos, el volver estacionarias las series...

  10. DIFERENCIAS ENTRE ACTORES SOCIALES EN EL CONOCIMIENTO Y LA PERCEPCIÓN DE LA VEGETACIÓN DE LA CUENCA DE LA CIÉNAGA DE LA VIRGEN (CARTAGENA DE INDIAS, COLOMBIA)

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    Torregroza Fuentes, Edilbert; Universidad de Cartagena (Colombia).; Llamas Chávez, Jorge; Universidad de Cartagena (Colombia).; Borja Barrera, Francisco; Universidad de Huelva (España).

    2014-01-01

    La percepción y las actitudes de los actores sociales presentes en un determinado territorio son vitales para su adecuada gestión. Tales aspectos fueron evaluados para el caso cuenca de la Ciénaga de la Virgen (Cartagena de Indias, Colombia), en relación a doce especies vegetales presentes en el territorio, considerando la cuenca desde un enfoque socioecosistémico, desde el que se recalca la interacción y adaptación entre los sistemas sociales y ecológicos. El estudio aborda aspectos como el ...

  11. Water budget estimation on a data limited wetland: The case of the Ciénaga Grande de Santa Marta, Colombia

    Science.gov (United States)

    Hylin, Anna; Jaramillo, Fernando; Jarsjö, Jerker

    2015-04-01

    At the end of the 20th century, the combination of climatic and anthropogenic developments resulted in hyper salinity conditions and subsequent massive mangrove mortality in the wetland Ciénaga Grande de Santa Marta (CGSM) at the Caribbean coast of Colombia. Although salinity concentrations are generally related to the type and quantity of water entering and exiting a wetland and to its internal hydrological dynamics, there have been up to date no hydrological studies on the CGSM. Here we show how a water budget approach can be used as a first-order of approximation to describe the CGSM's hydrology, despite data limitations. We collected hydroclimatic data to calculate and analyze the fluxes of water entering and exiting CGSM and their corresponding uncertainties. We find that the water budget is mostly affected by precipitation, being the largest water budget parameter. Thus, precipitation largely controls the hydrological output of the wetland at its outlet to the Caribbean. The influence of precipitation on the wetland water budget and noticeable changes in ENSO (El Niño Southern Oscillation) frequency and intensity from mid 70's might have severely affected the CGSM hydrological regime and consequently mangrove mortality. Scenario analyses show that currently the contribution of freshwater from the streams coming down from the Sierra Nevada Mountain Range on the eastern side of CGSM is now larger than that of the channels draining from the Magdalena River on the west, in contrast to what occurred before under natural hydrological conditions. However, Monte Carlo simulations suggest that changes to the eastern freshwater inflow cannot significantly affect the hydrological response of CGSM. These results outline the need to increase understanding of the internal connectivity and circulation of CGSM and develop a hydrologic monitoring network in this wetland.

  12. Depositional facies, environments and sequence stratigraphic interpretation of the Middle Triassic-Lower Cretaceous (pre-Late Albian) succession in Arif El-Naga anticline, northeast Sinai, Egypt

    Science.gov (United States)

    El-Azabi, M. H.; El-Araby, A.

    2005-01-01

    The Middle Triassic-Lower Cretaceous (pre-Late Albian) succession of Arif El-Naga anticline comprises various distinctive facies and environments that are connected with eustatic relative sea-level changes, local/regional tectonism, variable sediment influx and base-level changes. It displays six unconformity-bounded depositional sequences. The Triassic deposits are divided into a lower clastic facies (early Middle Triassic sequence) and an upper carbonate unit (late Middle- and latest Middle/early Late Triassic sequences). The early Middle Triassic sequence consists of sandstone with shale/mudstone interbeds that formed under variable regimes, ranging from braided fluvial, lower shoreface to beach foreshore. The marine part of this sequence marks retrogradational and progradational parasequences of transgressive- and highstand systems tract deposits respectively. Deposition has taken place under warm semi-arid climate and a steady supply of clastics. The late Middle- and latest Middle/early Late Triassic sequences are carbonate facies developed on an extensive shallow marine shelf under dry-warm climate. The late Middle Triassic sequence includes retrogradational shallow subtidal oyster rudstone and progradational lower intertidal lime-mudstone parasequences that define the transgressive- and highstand systems tracts respectively. It terminates with upper intertidal oncolitic packstone with bored upper surface. The next latest Middle/early Late Triassic sequence is marked by lime-mudstone, packstone/grainstone and algal stromatolitic bindstone with minor shale/mudstone. These lower intertidal/shallow subtidal deposits of a transgressive-systems tract are followed upward by progradational highstand lower intertidal lime-mudstone deposits. The overlying Jurassic deposits encompass two different sequences. The Lower Jurassic sequence is made up of intercalating lower intertidal lime-mudstone and wave-dominated beach foreshore sandstone which formed during a short

  13. Valoración Económica del Manglar por el Almacenamiento de Carbono, Ciénaga Grande de Santa Marta

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    Arnold De la Peña

    2014-01-01

    Full Text Available La Ciénaga Grande de Santa Marta (CGSM genera diferentes bienes y servicios ambientales, por ejemplo, sumidero de carbono, hábitat de flora y fauna, despensa de alimentos y materias primas, entre otros. Se presenta una aproximación a la cuantificación monetaria del servicio de almacenamiento de carbono, con el fin de establecer información base para las decisiones de su uso. Lo anterior se hizo con base en muestreo de campo de 15 árboles de manglar y en mediciones realizadas en cuatro estaciones de monitoreo de la CGSM (Caño Grande, Rinconada, Aguas Negras y Luna por INVEMAR (2008. Para tal fin, se estimó la biomasa aérea total, las existencias de carbono y de dióxido de carbono equivalente (CO2e discriminada por especie y zona. Los resultados indican que en términos relativos el bosque de manglar de la CGSM puede almacenar entre 6,9 (la Luna y 45,7 (Rinconada t C ha-1. La valoración monetaria se encuentran entre US$ 87,76 y 591,41 t CO2e ha-1, según los precios pagados por el Banco Mundial, correspondiente a los Certificados de Emisiones Reducidas (CERs forestales no permanentes. El valor monetario amplia la importancia de iniciar un proceso que permita incorporar estos beneficios económicos a los actuales mecanismos de mercado y contribuyan a los esfuerzos locales de conservación.Palabras Clave: Manglar; almacenamiento de carbono; biomasa aérea; dióxido de carbono equivalente y valoración económica. Economic Valuation of Mangrove for the Carbon Storage in the Ciénaga Grande de Santa MartaAbstractThe Cienaga Grande de Santa Marta (CGSM Generate Different Environmental goods and services, for instance, carbon sink, habitat for flora and fauna, stocks of foods and raw materials, etc. This paper presents an attempt to value in monetary terms the service of carbon storage, with the aim to establish inputs for the decisions process of used. This paper presents an Attempt to Terms Monetary value in the service of carbon storage

  14. USO DE HIDROQUÍMICA E ISÓTOPOS AMBIENTALES PARA LA EVALUACIÓN DE LA CONEXIÓN HIDROLÓGICA ENTRE EL AGUA SUBTERRÁNEA Y EL HUMEDAL CIÉNAGA COLOMBIA. (UN PRIMER ACERCAMIENTO

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    SANTA ARANGO DIANA PATRICIA

    2010-05-01

    Full Text Available El entendimiento de las condiciones de flujo de agua desde y hacia un humedal se basa, en principio, en la interpretación de información hidrológica, pero además la incorporación de técnicas no convencionales como lo son la hidroquímica y la hidrología isotópica y permite un mayor nivel de comprensión de los sistemas hidrológicos, en la medida en que es posible identificar el origen, la evolución del agua y los tiempos de tránsito y residencia en los diferentes compartimientos del ciclo hidrológico. El sistema hidrológico Ciénaga Colombia representa un ecosistema estratégico en el Bajo Cauca antioqueño y en pro de su sostenibilidad, se requiere un mejor conocimiento de él. Se presentan aquí los primeros resultados del proyecto “Hydrochemical and Isotopic techniques for the assessment of hydrological processes in the wetlands of Bajo Cauca Antioqueño” que la Universidad de Antioquia adelanta en convenio con el Organismo Internacional de Energía Atómica, OIEA, inspirados en la idea de usar técnicas isotópicas para evaluar procesos hidrológicos en humedales.

  15. FLUCTUACIÓN DE LOS ENSAMBLES PLANCTÓNICOS EN LA CIÉNAGA DE AYAPEL (CÓRDOBA-COLOMBIA DURANTE UN CICLO SEMANAL FLUCTUATION OF PLANKTON ASSEMBLAGES AT AYAPEL SWAMP IN CÓRDOBA (COLOMBIA DURING A WEEKLY CYCLE

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    Juan Carlos Jaramillo-Londoño

    2012-12-01

    Full Text Available En esta investigación se evaluó la variación espacial y temporal de los ensamblajes fitoplanctónicos y zooplanctónicos, diariamente y durante un ciclo semanal, en seis estaciones de muestreo en la ciénaga de Ayapel (Córdoba, Colombia, tomando muestras integradas de la columna de agua. Ambos ensamblajes presentaron diferencias espaciales y una alta homogeneidad temporal. El fitoplancton estuvo dominado por cianobacterias principalmente Cylindropermopsis raciborskii y Planktolyngbya limnetica, y el zooplancton por rotíferos del género Brachionus.This research was intended to spatially and temporally evaluate phytoplankton and zooplankton assemblages on a daily basis during a weekly cycle, in six sampling stations at Ayapel swamp in Córdoba (Colombia, taking integrated samples of the water column. Both assemblages showed spatial differences and a high temporal homogeneity. Phytoplankton was dominated by cyanobacteria, specifically Cylindropermopsis raciborskii and Planktolyngbya limnetica; and zooplankton was dominated by Brachionus-genus rotifers..

  16. Identificación de fuentes terrestres de contaminación y cálculo de las cargas de contaminantes en el área de influencia de la Ciénaga Grande de Santa Marta, Caribe colombiano.

    OpenAIRE

    Vivas Aguas, Lizbeth Janeth; Espinosa, Luisa Fernanda; Parra Henriquez, Luis Gerardo

    2013-01-01

    La Ciénaga Grande de Santa Marta (CGSM) es la laguna costera más importantes del Caribe colombiano. Es un ecosistema estratégico para la conservación de la biodiversidad mundial, declarado Reserva de la Biósfera y Sitio Ramsar. No obstante, es también considerada una región ambientalmente perturbada por amenazas naturales y antropogénicas que aumentan la contaminación y afectan la calidad ambiental del ecosistema. Con el propósito de tener información que contribuya al diagnóstico de la conta...

  17. Conocimientos, actitudes y prácticas de las infecciones de transmisión vertical, en mujeres embarazadas atendidas en el Hospital San Cristóbal de Ciénaga

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    Katiuska Ariza

    2013-10-01

    Full Text Available ResumenEn un estudio transversal descriptivo realizado de mayo a noviembre de 2009, se estudiaron 108 gestantes atendidas tanto en consulta externa, como en el servicio de urgencias y en la sala de maternidad del hospital San Cristóbal de Ciénaga, hallándose 32 pacientes con VDRL reactivo (vereal disease research laboratory (29,6 %, de las cuales 7 presentaban inmunofluorecencia indirecta con absorción (FTA-ABS positiva, correspondiendo a una seroprevalencia de 6,4 % para sífilis. En cuanto a Toxoplasmosis se confirmaron 4 casos (3,7 % en mujeres procedentes de áreas rurales.El factor común en estas mujeres, es la pobre adherencia al control prenatal y la falta de conocimiento acerca de las infecciones de transmisión vertical (sífilis, toxoplasmosis y VIH aunado esto a diversas prácticas y conductas de riesgo que ponen en peligro el bienestar materno-fetal. (DUAZARY 2011, 42 - 47AbstractIn a descriptive study conducted from May to November 2009, we studied 108 pregnant women served both outpatient and in the emergency department and the hospital maternity ward of San Cristobal of cienaga. Being found 32 patients with reactive VDRL (29.6%, of which seven had positive FTA-ABS corresponding to a seroprevalence of 6.4% for syphilis. Toxoplasmosis As confirmed four cases (3.7% in women from rural areas. The common factor in these women is the poor adherence to prenatal care and lack of knowledge about vertical transmission of infections (syphilis, toxoplasmosis and HIV coupled this to various practices and risk behaviors that endanger the welfare maternal fetal.Keywords: vertical transmission; prenatal care; knowledge; attitude, practice.

  18. Validación y aplicación de un modelo de restauración de manglar basado en individuos para tres especies en la Ciénaga Grande de Santa Marta

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    Jenny Alexandra Rodríguez-Rodríguez

    2016-07-01

    Full Text Available En la década de los años 90 los manglares de la Ciénaga Grande de Santa Marta (CGSM murieron masivamente por los altos niveles de salinidad en el suelo. Este hecho estimuló la reapertura de cinco canales naturales para reducir la salinidad y mejorar las condiciones del bosque (Proyecto PROCIENAGA. Con base en esta experiencia, en 1999 un modelo basado en individuos (FORMAN fue desarrollado para simular trayectorias de restauración del bosque; sin embargo, este modelo fue restringido a un único sitio de la CGSM y a la fecha no había sido probado. Para mejorar su sensibilidad y predictibilidad para simular tendencias del Área Basal (AB de los árboles de Rhizophora mangle, Avicennia germinans y Laguncularia racemosa en este estudio se validó, calibró y ajustó el modelo FORMAN, usando datos de 16 años de monitoreo. Para ello, se modificó la interfaz del modelo y se ajustaron algunas rutinas de cálculo y parámetros. Se ejecutaron dos escenarios de simulación: (1 Asumiendo estabilidad en el intervalo de variación de la salinidad y, (2 aumentado la salinidad de acuerdo con el incremento promedio de los últimos tres años. Los ajustes en las tasas de reclutamiento y salinidad calculada permitieron calibrar el modelo y reproducir el patrón y la magnitud observada en tres estaciones. En dos estaciones solo se reprodujo el patrón de los datos. Las tendencias generales del AB de cada especie y su dinámica, así como las magnitudes actuales para las estaciones que sufrieron mayor impacto inicialmente, fueron reproducidas adecuadamente. Bajo un escenario en el que la salinidad se mantiene en un intervalo estable, el sistema alcanzaría la estabilidad en el largo plazo (>100 años. Un incremento promedio constante en la salinidad intersticial, resultaría en una disminución severa del AB en el corto plazo (menos de 20 años, demostrando la vulnerabilidad de la CGSM a los incrementos en salinidad y la necesidad de implementar medidas de

  19. Seasonal chaetognath abundance and distribution in a tropical estuary (Southeastern, Brazil

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    Luiz Loureiro Fernandes

    2005-06-01

    Full Text Available This study focuses on the seasonal variation of the chaetognath species in the Vitória Bay/Passage Channel estuarine system, Espírito Santo, Brazil, in terms of their abundance and distribution. Specimens of chaetognaths were collected between July 1997 and April 1998 at 10 sampling stations, with a cylindrical-conical plankton net of 200 µm mesh and 30 cm mouth, fitted with a mechanical flowmeter. Five chaetognath species were identified: Sagitta enflata, Sagitta decipiens, Sagitta hispida, Sagitta friderici and Sagitta minima. Most of them were distributed in areas of high salinity (e.g. at the stations closest to the outer estuary. The dominant species, S. enflata and S. friderici, were more frequent in the outer estuary where salinities varied from 32 (wet season - summer to 28 (dry season - winter. S. friderici was the only species found right in the middle of the Passage Channel, at a station close to the main freshwater input into the estuary. Results showed that chaetognaths only enter the estuary due to the tidal effect, and that they are not typical residents of this system. This is to be expected because the group normally inhabits only truly marine regions.Este estudo abordou a abundância e distribuição sazonal das espécies de quetognatos, no sistema estuarino baía de Vitória/Canal da Passagem, Espírito Santo, Brasil. Os organismos foram coletados entre julho de 1997 e abril de 1998 em 10 estações amostrais, utilizando uma rede de plâncton cilíndrico-cônica de 200µm de malha e 30 cm de abertura de boca, dotada de um fluxômetro mecânico. Cinco espécies de quetognatos foram identificadas: Sagitta enflata, Sagitta decipiens, Sagitta hispida, Sagitta friderici e Sagitta minima. A maioria destas espécies esteve distribuída em áreas com alta salinidade (e.g. estações próximas a saída do estuário. As espécies dominantes S. enflata e S. friderici foram mais freqüentes na parte externa do estuário onde as

  20. Pteropoda, Cladocera, and Chaetognatha associations as hydrological indicators in the southern Brazilian Shelf Asociaciones de Pteropoda, Cladocera y Chaetognatha como indicadores hidrológicos de la plataforma del extremo sur de Brasil

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    Charrid Resgalla Jr

    2008-01-01

    Full Text Available Associations of pteropod, cladoceran, and chaetognath species were analyzed for the southern coast of Brazil in order to present a biological diagnosis of the oceanographic conditions in winter and summer. The density data from the different species were analyzed using nodal and ordination cluster techniques, linking the species associations with salinity and temperature and, consequently, with the water masses occurring in each period. Sagitta tennis and Pleopsis polyphemoides were found to characterize the coastal water and, when associated with Evadne nordmanni and Pleopsis schmackeri, differentiated between the thermal characteristics of winter and summer, respectively. The Sub-Antarctic Shelf Water was characterized by the association of Sagitta tasmanica and Limacina retroversa in winter. The Tropical Water of the Brazil current presented several different associations, with Penilia avirostris, Sagitta enflata, and Creseis virgula dominating the shelf Tropical Water and Sagitta serratodentata, Limacina trochiformis, and Evadne spinifera characterizing the oceanic Tropical Water. The Sub-tropical Water, typical of upwelling processes, was characterized by the association of the chaetognaths Sagitta decipiens and Krohnitta subtilis, both in winter and summer. The species associations defined in this study agree with others carried out in neighboring areas and in previous sampling periods, characterizing the región as the southern transition zone.Se analizó las asociaciones de especies de Pteropoda, Cladocera y Chaetognatha en la costa sur de Brasil, para presentar un diagnóstico biológico de las condiciones oceanógraficas de invierno y verano. Los datos de densidad de las diferentes especies fueron analizados por técnicas de agrupamiento nodal y de ordenación, relacionando las asociaciones con la salinidad, temperatura y, consecuentemente, con las masas de agua presentes en cada período. Se observó que Sagitta tennis, Pleopsis

  1. Motif Naga pada Hinggi Sumba Timur Sebuah Metamorfosa Estetik

    Directory of Open Access Journals (Sweden)

    Biranul Anas

    2007-03-01

    Full Text Available Hinggi, a traditional ikat cloth, is one of East Sumba’s foremost material culture. As a component of the East Sumbanese traditional man’s dress, hinggi is visually impressive. Its patterns display attractive motives, decorative and symbolic, that depict religious conviction, power, wealth, status, honor and gender prestige, based on local and foreign sources that comply to traditional standards of quality. Intrinsically it indicates hinggi’s central role in social and ritual context, making it a highly prized item among the East Sumbanese, a matter that has been taken place since ancient days, and the international audience as well. Throughout its long history, the making of the hinggi came in contact with outside powers i.e. through trade, colonialism, education, and industrialization, including today’s international tourism. From a cloth that functioned to serve the internal culture of its producers, hinggi became a commodity for outsiders that consequently affected its aesthetical aspects. Hinggi’s patterning went through changes towards new forms adjusting to external demand, especially for the past 30 years, resulting in salient differences between hinggis made for sale and those made for internal use. Significant visual changes are that of the introduction of secular designs depicting local cultural themes such as ceremonies and mock battles, conveyed in realistic expressions with  smooth lines in a coinciding asymmetric configuration within a narrative set up, replacing traditional spiritual iconography which is relatively stylistic, abstract and stiff, in a diametrical symmetric setting with no expository relation. New hinggi designs principally sprung up from three main themes i.e. the papanggang, a spectacular burial ceremony carried out for personalities of high social status; the pasola, a ceremonial (in the past real battle between opposing parties; and the palai ngandi, a folk tale about the groom’s kidnapping of his bride. The three themes are presented in numerous variations, partly in combination with traditional symbolic motives, which now play a minor role in the overall configuration, besides the many more without them. However, the new designs have no role in East Sumba’s tradition. Traditionally designed hinggis continue to exist due to their importance in the East Sumbanese internal culture.

  2. Losio Antioksidan Buah Naga Merah (Hylocereus polyrhizus Britton and Rose

    Directory of Open Access Journals (Sweden)

    Amanda Angelina Sinaga

    2015-04-01

    Full Text Available Hylocereus polyrhizus Britton and Rose (Red dragon fruit has been shown to have antioxidant activity which contains vitamin C, polyphenol, and flavonoid. This research was aimed to investigate antioxidant effectivity from H. polyrhizus in form of lotion. Lotion were made with 5 concentrations from H. polyrhizus methanol extract which were 0.04; 0.08; 0.16; 0.32 and 0.64%. The antioxidant activity of lotion was measured using DPPH method. The research showed that H. polyrhizus methanol extract had antioxidant activity with inhibition concentration were 19.99±0.33; 25.01±0.08; 39.14±0.04; 66.69±0.12 and 83.37±0.05. The result showed significant differences on antioxidant activity. The physical stability observation of five formula with cycling test method showed unstability because of discolouration (oxidation. As well as the methods of mechanical test showed unstability of lotion because saponification process.

  3. Kajian Penyimpanan Buah Naga (Hylocereus costaricensis dalam Kemesan Atmosfer Termodifikasi

    Directory of Open Access Journals (Sweden)

    Sutrisno

    2011-10-01

    Full Text Available Modified atmosphere packaging (MAP is an alternative technologies for foodstuff packaging, distribution and storage which resulting in products with an increased shelf-life. The principle of MAP is modifying the gas inside the packaging by using plastic or film with specific permeability. This technology will be tried to package dragon fruit (Hylocereus costaricensis to prolong its shelf-life. The procedures are respiration rate measurement, determining O2 and CO2 composition of modified atmosphere packaging, and determining the type of packaging film. There are also observations made include the weight loss, hardness and color changes, total soluble solids, and organoleptic test. The result is respiration rate of dragon fruit at temperature 10°C, 15°C and ambient are 4.15ml/kg.hour CO₂ and 3.95 ml /kg.hour O₂, 9.94 ml/kg.hour CO₂ and 8.75 ml/kg.hour O₂, 16.72 ml/kg.hour CO₂ and 16.72 ml/kg.hour O₂. The composition of the atmosphere that recommended for storage of dragon fruit is 2-4% O₂ and 6-8% CO₂on 10°C and prolong the storage-life until 25 days with stretch film and styrofoam plate which dimension 12cm x 18cm.

  4. Penetapan Kadar Kalsium dan Fosfor dalam Buah Naga Daging Merah (Hylocereus costaricensis) dan Buah Naga Daging Putih (Hylocereus undatus)

    OpenAIRE

    Tambunan, Christina Debora

    2014-01-01

    Dragon fruit is often consumed by the general public in the form of fresh fruit. Dragon fruit contains many minerals such as calcium and phosphorus. Both of these minerals are needed by the body. Therefore, it is necessary to do research on calcium and phosphorus levels on dragon fruit. The purpose of this study is to determine the levels of calcium and phosphorus in the red flesh dragon fruit (Hylocereus costaricensis) and white flesh dragon fruit (Hylocereus undatus). Research is qualita...

  5. Hubble Space Telescope Observations of UV Oscillations in WZ Sagittae During the Decline from Outburst

    OpenAIRE

    Welsh, W. F.; Sion, E. M.; Godon, P.; Gansicke, B. T.; Knigge, C.; Long, K. S.; Szkody, P.

    2003-01-01

    We present a time series analysis of Hubble Space Telescope observations of WZ Sge obtained in 2001 September, October, November and December as WZ Sge declined from its 2001 July superoutburst. Previous analysis of these data showed the temperature of the white dwarf decreased from ~29,000 K to ~18,000 K. In this study we binned the spectra over wavelength to yield ultraviolet light curves at each epoch that were then analyzed for the presence of the well-known 27.87 s and 28.96 s oscillatio...

  6. Un Chaetognathe mésoplanctonique nouveau: Sagitta megalophthalma sp.n

    NARCIS (Netherlands)

    Dallot, S.; Ducret, F.

    1969-01-01

    Les auteurs décrivent un Chaetognathe nouveau caractérisé par la grande taille de la zone pigmentée des yeux, un intestin de type vacuolisé et des vésicules séminales simples. Cette espèce très rare semble nettement mésoplanctonique; elle est présente en Méditerranée et dans l’Atlantique.

  7. FG Sagittae, a test of the theory of evolution of double shell source stars

    International Nuclear Information System (INIS)

    Fadeyev, Yu.A.

    1984-01-01

    FG Sge is a unique stellar object possessing a number of unusual properties which are as follows: (1) FG Sge is a core of a planetary nebula, (2) at least since 1894 this star has crossed the HR diagram from the left to the right, (3) the atmosphere of FG Sge was enriched in s-elements, (4) FG Sge is a pulsating variable the period of which progressively increases from 15 days in 1962 to 110 days in 1980. The author estimates the distance and age of FG Sge from the hypothesis that it moves in the HR diagram along the horizontal loop due to a helium shell flash in its interior. (Auth.)

  8. Unusual thickening of collarette in Sagitta bedoti (Chaetognatha) from the polluted environments of Bombay coast

    Digital Repository Service at National Institute of Oceanography (India)

    Nair, V.R.; Nagasawa, S.; Ramaiah, N.; Nemoto, T.

    Sangitta bedoti dominated the chaetognath fauna of the nearshore waters of Bombay. S. bedoti from the polluted creek environments developed an unusually bulky collarette which extended from the neck to the seminal vesicles. Such extensive...

  9. Daldinia decipiens and Entonaema cinnabarina as fungal symbionts of Xiphydria wood wasps

    Czech Academy of Sciences Publication Activity Database

    Šrůtka, P.; Pažoutová, Sylvie; Kolařík, Miroslav

    2007-01-01

    Roč. 111, - (2007), s. 224-231 ISSN 0953-7562 R&D Projects: GA ČR GA206/07/0283 Institutional research plan: CEZ:AV0Z50200510 Keywords : alnus * daldinia concentrica * daldinia fissa Subject RIV: EE - Microbiology, Virology Impact factor: 1.861, year: 2007

  10. Prognosis: The Plan of Integrated Tourism Area of Kapuk Naga Beach, Tangerang, West Java

    Directory of Open Access Journals (Sweden)

    Kuswaji Dwi Priyono

    2004-01-01

    Full Text Available This paper  tries to analyze of prognosis of the Integrated Tourism Area Planning of Kapuknnaga Beach (KWTPK Tangerang Regency West Java. The two method applied to compose the prognosis are extrapolation and indication. The extrapolation is based on the local area infomation data of contemporary knowledge in the past and presence, while the indication method utilizes the whole interrelation activities programmed with the possible consequences. Land function transformation effects of KWTPK will cause environmental destroy as annual flsh flood, salt water intrusion and polution of urban’s industry sewage. As further effect there is a raising of turbidity and nitrition degree of sedimentation which make coral-ridge degradation toward annihilation. The coral-ridge annihilation will cause the sea waves power collide with the seashore area directly which threatens KWTPK.

  11. Religion of the Tangkhul Naga in North-East India: Continuity and ...

    African Journals Online (AJOL)

    Dr. Rimai Joy is Assistant Professor in Amity University, India. He completed his Ph.D in Social. Anthropology from University of Delhi, India. He has various teaching and research experiences including four years teaching in University of Delhi, visiting faculty to premier. University and conducted research in different parts of ...

  12. 110 1*Atkuru Veera Venkata Naga Krishna Sunil Kumar, 2Chandra ...

    African Journals Online (AJOL)

    of VDL in biological fluids. These include HPLC with amperometry detection [3], HPLC with UV detection [4], HPLC with fluorescence detection. [5], LC-MS [6,7], GC-MS [8,9] and square-wave adsorption ... stability indicating liquid chromatography with. UV detection ... in drug analysis and the spectrophotometric methods ...

  13. ANALISIS KANDUNGAN ASAM ASKORBAT DALAM BUAH NAGA MERAH (Hylocereus polyrhizus DENGAN IODIMETRI

    Directory of Open Access Journals (Sweden)

    Abdul Rahim

    2016-11-01

                  The research to determine “Analysis the Content of Ascorbic Acid in the Red Dragon Fruit by Iodimetri” Vitamin C concentration of postharvest red dragon fruit (Hylocereus Polyrhizus and at the same time to recognize those the packaging could affected conten of obtained Vitamin C. Analysis process was conducted by iodimetric titration method through the sample of dragon fruit with saving period and packaging varied. The result of completed research find out there was are difference concentration of Vitamin C between packaged dragon fruit and without package, the concentration of Vitamin C in packaged dragon fruit was increase the concentration of Vitamin C from the first day (11,1680 mg/100 gram of sample to the third day (14,8017 mg/100 gram of sample and decrease until the fifth day (10,4743 mg/gram of sample, otherwise by another treatment without package the concentration of Vitamin C are increase from the first day (7,4928 mg/100 gram of sample to the sixth day (19,6784 mg/100 gram of sample and decreased until the eighth day (14,1395 mg/100 gram of sample.   Keywords  : Red dragon fruit (Hylocereus Polyrhizus, Vitamin C dan iodimetric titration.

  14. KARAKTERISTIK JELLY DRINK SINBIOTIK DARI SUSU KEDELAI DAN EKSTRAK BUAH NAGA MERAH (Hylocereus polyrhizus

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    Sri Winarti

    2018-03-01

    Full Text Available Jelly drink is a gel-based beverage product, which can be made from hydrocolloid compounds by addition of sugars, acids, and or without other food additives, sinbiotics are a combination of probiotics and prebiotics. The purpose of this study was to determine the effect concentration of carrageenan and fermentation timt on the quality of jelly drink sinbiotik soy milk and red dragon fruit extract. The method used in this research is Completely Randomized Design with two factors. The first factor was the concentration of carrageenan (0.4%, 0.6%, 0.8% and the second factor of fermentation time (18 hours, 20 hours, 22 hours and 24 hours. To know the difference between treatments used Duncan Multiple Range Test (DMRT 5%. The results showed that the best treatment was the addition of carrageenan 0,8% and the  fermentation time of 24 hours which resulted jelly drink sinbiotik with pH value 3,7, total acid 1,02%, total lactic acid bacteria (BAL 11,13 log cfu/ml, total sugar 7.92%, 1.89% dissolved protein, total anthocyanin 0.645% and gel strength 3.27 N.

  15. Pengaruh Pemberian Jus Buah Naga Merah (Hylocereus polyrhizus Terhadap Kadar Trigliserida Tikus Putih (Rattus norvegicus Hiperlipidemia

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    Afrida Wira Surya Rizqi

    2014-03-01

    Full Text Available Cardiovascular disease is a disease that causes the most deaths in the world. One of its main risk factor is triglyceride levels which make the emergence of plaque in coronary artery. Statin as an option drug in reducing triglyceride levels apparently reported to cause myopathy and kidney failure when used in a long term. Natural product like red dragon fruit began to be developed as a safer alternative. The content of various substances such as niacin, vitamin C and fiber in it useful as antihypertriglyceridemia. This study aims to determine the effect of red dragon fruit (Hylocereus polyrhizus juice to the decrease of triglyceride levels in hyperlipidemic white rats (Rattus norvegicus. This study was an experimental study with pre and post test with control group design. The subjects were 24 male experimental animals (Rattus norvegicus were divided into 4 groups: one positive control group given simvastatin 0.18 mg/ 200 gram of  weight and three groups treated with red dragon fruit juice doses of 3.6; 5.4 and 7.2 gram/ 200 gram of weight. Then, data were analyzed escriptively with One-Way ANOVA test using SPSS 16.0 for Windows. Results with descriptive analysis obtained that mean of positive control’s pre-test triglyceride level was 104.80 mg/ dl and treatment groups I, II and III respectively 108.15 mg/ dl, 106.47 mg/ dl and 107.43 mg/ dl whereas positive control’s post-test triglyceride level was 51.09 mg/ dl and for the treatment groups were 94.64 mg /dl, 71.01 mg/ dl and 58.75 mg/ dl. One Way ANOVA test obtained p <0.05 which indicated the difference between the treatment of various doses of red dragon fruit juice to white rats’ triglyceride levels. Based on that, means there is the effect of various doses of red dragon fruit (Hylocereus polyrhizus juice to the decrease of triglyceride levels in hyperlipidemic white rats (Rattus norvegicus.

  16. Pengaruh Pemberian Jus Buah Naga Merah (Hylocereus polyrhizus Terhadap Kadar Trigliserida Tikus Putih (Rattus norvegicus Hiperlipidemia

    Directory of Open Access Journals (Sweden)

    Afrida Wira Surya Rizqi

    2014-09-01

    Results with descriptive analysis obtained that mean of positive control’s pre-test triglyceride level was 104.80 mg/ dl and treatment groups I, II and III respectively 108.15 mg/ dl, 106.47 mg/ dl and 107.43 mg/ dl whereas positive control’s post-test triglyceride level was 51.09 mg/ dl and for the treatment groups were 94.64 mg /dl, 71.01 mg/ dl and 58.75 mg/ dl. One Way ANOVA test obtained p <0.05 which indicated the difference between the treatment of various doses of red dragon fruit juice to white rats’ triglyceride levels. Based on that, means there is the effect of various doses of red dragon fruit (Hylocereus polyrhizus juice to the decrease of triglyceride levels in hyperlipidemic white rats (Rattus norvegicus.

  17. The relationship between seal abundance and cod worm (Phocanema decipiens) infestation in cod in Norwegian coastal waters

    OpenAIRE

    Bjørge, Arne

    1985-01-01

    A sample of 52 cods, Gadus morhua, caught close to a grey seal, Halichoerus grypus, haul out site, and a total of 652 cods from 18 commercial catches (average sample size 36 cods) were examined with regard to cod worm infestation. The sampling was carried out from July 1978 to January 1981 in Norwegian coastal waters between 62° and 66° North. The presence of larval cod worm was recorded in 64% of the examined fishes, and the average infestation in all 704 fishes was 8.5 ...

  18. Description, microhabitat selection and infection patterns of sealworm larvae (Pseudoterranova decipiens species complex, nematoda: ascaridoidea) in fishes from Patagonia, Argentina

    Czech Academy of Sciences Publication Activity Database

    Hernández-Orts, Jesús S.; Aznar, F. J.; Blasco-Costa, Maria Isabel; García, N.A.; Víllora-Montero, M.; Crespo, E.A.; Raga, J. A.; Montero, F. E.

    2013-01-01

    Roč. 6, AUG 2013 (2013), s. 252 ISSN 1756-3305 Institutional support: RVO:60077344 Keywords : Anisakidae * Eealworms * Pseudoterranova cattani * taxonomy * Ecology * Cox1 * Marine fishes * Southwestern Atlantic Subject RIV: EH - Ecology, Behaviour Impact factor: 3.251, year: 2013

  19. Estructura de la comunidad íctica de la Ciénaga de Mallorquín, Caribe colombiano

    OpenAIRE

    Arrieta V., L.; Rosa Muñoz, J. de la

    2003-01-01

    In order to evaluate the structure of the fish community in the coastal lagoon of Mallorquín, sampling was made each two weeks in nine stations widely allocated in the study area from July 1998 to April 1999. A total of 36 species corresponding to 22 fish families were analized. Based on the frequency of occurrence, 58% were classified as occasional visitors, 26% as frequent visitors, and a 16% as residents. Total abundance was 2424 individuals and 187 Kg of biomass (fresh weight). 89,3% of t...

  20. Pengaruh pemberian aditif cair buah naga merah (Hylocereus polyrhizus terhadap performa burung puyuh betina umur 16-50 hari

    Directory of Open Access Journals (Sweden)

    Vernanda Windi Laksmita

    2015-12-01

    Full Text Available The research aimed to know the effect of a liquid additive red dragon fruit (Hylocereus polyrhizus on the performance of quail females aged 16-50 days with different treatment. The research was conducted at cage of Non Ruminant Feed Nutrition Science Laboratory, Department of Animal Nutrition and Feed, Animal Agriculture Faculty, Diponegoro University on September-December 2015. The research design based on Completely Randomized Design (CRD, with the control treatment and treatment liquid additives red dragon fruit twice a day, once a day and two days one. Each treatment was 5 times repeated. The parameters measured were feed consumption, weight gain, feed conversion and feed efficiency. The results showed that the treatment was not significant (P> 0.05 effects on feed consumption, weight gain, feed conversion and feed efficiency in quail. The average of T0, T1, T2 and T3 which feed consumption of 15.64; 15.85; 15.67 and 15.80 g/ head/day, weight gain of 118.70; 121.00; 124.20 and 126.90 g/head, feed conversion of 4.62; 4.58; 4.43 and 4.38 and feed efficiency of 21.68; 21.98; 22.65 and 22.92%. The conclusion is the treatment of a liquid additive red dragon fruit (Hylocereus polyrhizus on quail resulted in feed consumption, weight gain, feed conversion and feed efficiency were similar to the control treatment that has not been able to improve the performance of quail aged 16-50 days. Keywords : quail, red dragon fruit, feed consumption, performances

  1. Pengaruh pemberian aditif cair buah naga merah (Hylocereus polyrhizus terhadap kecernaan proein, energi metabolis dan produksi telur burung puyuh

    Directory of Open Access Journals (Sweden)

    Rika Dwi Astuti

    2015-12-01

    Full Text Available The study was aimed to evaluate the effect of liquid additive red dragon fruit as the addition of drinking water on the digestibility of protein, metabolizable energy and the production of quail eggs. Experimental animals used in the research were 200 female quails, 7 day old with average body weight of 13.61 ± 0.49 g. The experiment used a completely randomized design with 4 treatments and 5 replications : T0 (control, T1 (addition of a liquid additive red dragon fruit about 5 ml twice a day, T2 (once a day and T3 (two days on time. The parameters measured were feed intake, digestibility of protein, metabolizable energy and production of quail eggs. Data were analyzed using a variety of F test at the level 5%, followed by Duncan’s Multiple Range test when there are significant effects on the treatment. The results showed that liquid additives red dragon fruit was not significant (P>0.05 on the digestibility of protein, metabolizable energy and the production of quail eggs. In conclusion, the adition of liquid additives reddragon fruit did not increase digestibility of protein, metabolizable energy and the production of quail eggs. Keywords: digestibility of crude protein, quail, quail egg production, red dragon fruit

  2. Atlas of marine bony fish otoliths (Sagittae of Southeastern - Southern Brazil Part I: Gadiformes (Macrouridae, Moridae, Bregmacerotidae, Phycidae and Merlucciidae; Part II: Perciformes (Carangidae, Sciaenidae, Scombridae and Serranidae

    Directory of Open Access Journals (Sweden)

    Carmen Lucia Del Bianco Rossi-Wongtschowski

    2014-01-01

    Full Text Available The drawings, detailed pictures, precise descriptions and measurements that characterize otoliths must be made available for studies in various areas, including taxonomy, phylogeny, ecology, fisheries, paleontology, diversity, predator-prey relationships and modeling. The Collection of Teleostei Fish Otoliths of Southeastern-Southern Brazil (COSS-Brasil of IOUSP contains 45,000 pairs of otoliths from 210 species. This publication is the first in a series that will constitute an atlas of Teleostei otoliths for southeastern-southern Brazil and presents the results of the morphologic and morphometric analyses of 11 Gadiformes and 36 Perciformes species by means of the most commonly used features, measurements and indices. Three otoliths of each species were illustrated and photographed whenever possible. The frequency of occurrence was calculated for each characteristic by total length classes (TL, and the ontogenetic differences were analyzed (multiple χ2 test; significance 0.05. Morphometric analyses were conducted for each characteristic per total length (TL class and for the whole sample, and the ontogenetic differences were analyzed.

  3. Uso actual y potencial de la flora de la ciénaga de Zapatosa, en el municipio de Chimichagua, Cesar - Colombia

    Directory of Open Access Journals (Sweden)

    Néstor David Jiménez Escobar

    2007-08-01

    importancia de las especies nativas, principalmente de las ubicadas dentro de la categoría de Artesanales y Construcción, por su importancia cultural y ambiental, pues son fundamentales para la generación de planes de manejo y conservación. Entre ellas se destacan la palma estera (Astrocaryum malybo y el Banco (Gyrocarpus americana, por el grado de amenaza en la que se encuentran y por su estrecha relación con el patrimonio cultural de la región.

  4. « El azar y la necesidad » Élite y elecciones matrimoniales en Buenos Aires 1776-1820. Las familias Azcuénaga y Andonaegui

    Directory of Open Access Journals (Sweden)

    Maria Selva Senor

    2005-01-01

    Full Text Available En el presente articulo se reconstruyen las trayectorias matrimoniales de dos familias de la élite en el Río de la Plata entre 1776 y 1810 con el objeto de descubrir las estrategias seguidas por las mismas y las repercusiones del azar. Desde una perspectiva microanalitica y a partir de la utilización de la noción de redes sociales se intentará ilustrar acerca de las reglas sociales en una sociedad con variados contextos normativos superpuestos, que incluyen asimismo a la política del Estado y en la que los agentes pueden manipular reglas y tomar decisiones haciendo que el grado de incertidumbre sea mayor.

  5. Kecernaan protein dan energi metabolis akibat pemberian zat aditif cair buah naga merah (Hylocereus polyrhizus pada burung puyuh japonica betina umur 16-50 hari

    Directory of Open Access Journals (Sweden)

    Meina Yuniarti

    2015-12-01

    Full Text Available Digestibility of crude protein and energy is used to measure digestibility in poultry, digestible shows of feed substances absorbed by the body which will affect the productivity of quail. This experiment was conducted to study the effect of red dragon fruit liquid additif (Hylocereus polyrhizus, digestibility protein and metabolizable energy by quail female age 16-50 days. Experiment used 200 japanese quails females, 7 weeks age with average body weight of 13.61±0.49 g. The study was conducted in battery cages. The experiment used Completely Randomized Design with 4 treatments and 5 replications: T0 (control, T1 (Award liquid additives red dragon fruit twice a day, T2 (one a day and T3 (two days. The dose of a liquid additive is 5 ml/quail. Observation of digestibility of crude protein (KcPK and the energy carried by the method of total collection for 3 days, measurements using a bomb calorimeter gross energy and protein analysis using Kjeldahl method. Data were analyzed using a variety of test F at the level 5%, followed by Duncan's Multiple Range Test (UJBD there is significant effect of the treatment each treatment was showed liquid additives red dragon fruit was not significant (P> 0.05 on crude protein digestibility and apparent metabolizable energy. The conclusion, the given of liquid additives red dragon fruit did not increase digestibility of crude protein and apparent metabolizable energy. Keywords: quail, red dragon fruit, digestibility of crude protein

  6. CHARACTERISTICS OF SOYMILK ADDED WITH DRAGON FRUIT AND EGGPLANT PEEL EXTRACTS [Karakteristik Susu Kedelai dengan Penambahan Ekstrak Kulit Buah Naga dan Kulit Terong

    Directory of Open Access Journals (Sweden)

    Diana Sari Kusuma

    2013-06-01

    Full Text Available Soymilk has become progressively consumed in Indonesia since early 1990. However, soymilk has a short shelf life due to its high protein content that promotes growth of spoilage microorganisms. This study was aimed at utilizing peel waste of eggplant (Solanum melongena L. and dragon fruit (Hylocereus polyrhizus, to prolong shelf life of fresh soymilk through microbial growth inhibition, so that it will not be easily contaminated during storage, transportation and distribution time to meet the needs of consumers. Microbiological analysis showed a notably higher inhibitory effect of dragon fruit peel extract when soymilk was stored at 4ºC and it exhibited lower number of colonies even after 6 days. Interestingly, the antimicrobial activity of eggplant peel extract in cold soymilk could only be observed on day 3 until day 9. Hence, it is assumed that chlorogenic acid, as a primary antimicrobial agent in eggplant peel, needed certain time interval to activate its inhibitory activity against microorganism. However, the two peel extracts could not prolong the shelf life of soymilk stored at ambient temperature. All soymilk samples added with the peel extracts fulfilled the Indonesian National standards (SNI for pH value, protein, and total solid content. Based on the sensory evaluation, the samples with dragon fruit peel extract attained a comparable acceptance level as plain soymilk and were favored over those added with eggplant extract. In conclusion, this research indicated potential applications of usual household waste of dragon fruit and eggplant peels as antimicrobial agents for protein-rich beverages.

  7. SIFAT KIMIA SELAI BUAH NAGA, KOMPOSISI MIKROFLORA DAN PROFIL SCFA FESES RELAWAN [Chemical Properties of Drugon Fruit Jam, Microflora Composition and SCFA Profile of Human Volunteer Faecal

    Directory of Open Access Journals (Sweden)

    Nurhayati

    2015-12-01

    Full Text Available Dragon fruit contains oligosaccharides, Including prebiotic ingredients, that are namely raffinose, stachyose, and fructo-oligosaccharides. The heat treatment process like jam producing can affect the functional properties of a food material. The aim of the research wereto know the effect of jam processing on chemical properties, and their prebiotic properties. Evaluation of the prebiotic properties was conducted by in vivo method i.e. probiotic and enterobacteria population of volunteers faecal (microflora composition, prebiotic index (PI value and Short Chain Fatty Acid (SCFA profile. The result showed that the processing of dragon fruit into jams decreased water content, β-sianin and dissolved particles but increased the Insoluble Indigestible Fraction (IIF. The PI value of dragon fruit jam were 1.70 for white dragon jam and 1.18 for red dragon fruit. The jam processing decreased PI value up to 0.49 (red dragon fruit jam and 0.54 (white dragon fruit jam. The fresh dragon fruit and the jam produced short chain fatty acid (SCFA i.e. acetic and propionic acid. It can be concluded that prebiotic properties of white dragon fruit better than red dragon fruit.

  8. N-acetylgalatosamine-Mediated Regulation of the aga Operon by AgaR in Streptococcus pneumoniae

    NARCIS (Netherlands)

    Afzal, Muhammad; Shafeeq, Sulman; Ahmed, Hifza; Kuipers, Oscar P

    2016-01-01

    Here, we analyze the transcriptomic response of Streptococcus pneumoniae D39 to N-acetylgalactosamine (NAGa). Transcriptome comparison of S. pneumoniae D39 grown in NAGaM17 (0.5% NAGa + M17) to that grown in GM17 (0.5% Glucose + M17) revealed the elevated expression of various carbon metabolic

  9. Atlas of marine bony fish otoliths (sagittae of Southeastern-Southern Brazil Part V: Perciformes (Sparidae, Sciaenidae, Polynemidae, Mullidae, Kyphosidae, Chaetodontidae, Mugilidae, Scaridae, Percophidae, Pinguipedidae, Blenniidae, Gobiidae, Ephippidae, Sphyraenidae, Gempylidae, Trichiuridae, Scombridae, Ariommatidae, Stromateidae and Caproidae

    Directory of Open Access Journals (Sweden)

    Cesar Santificetur

    Full Text Available ABSTRACT This publication is part of a series prepared with the purpose to constitute an Atlas of Teleostei Otoliths for the Southeastern-Southern Brazilian area. Here we present the results of 15 morphological features and six shape indices for 33 Perciformes species of 20 families. Whenever available in out collection, three otoliths of each species were illustrated and photographed. The frequency of occurrence of each feature was calculated inside and among total length classes being the differences analyzed through multiple χ2 tests (significance level 0.05. Based on otoliths measurements, six shape indices values were obtained being the minimum, maximum, mean and standard deviations values presented.

  10. Otolith features and growth of juvenile Opsaridium microcephalum ...

    African Journals Online (AJOL)

    Sanjika, Opsaridium microcephalum, were collected from two sites (Nkhotakota and Chia) along the southwestern shoreline of Lake Malawi. The sagitta of the otolith was arrow headshaped with an obvious nucleus. Increments in the sagittae were observable until the bases of the rostra but invisible in the rostra.

  11. Adjudicación y conflictos por tierras comunales en los pueblos de indios de Ciénaga y Gaira en la gobernación de Santa Marta, 1700-1810

    Directory of Open Access Journals (Sweden)

    Hugues R. Sánchez Mejía

    2012-01-01

    Full Text Available Este artículo examina la forma como los indígenas ubicados en varios pueblos cercanos a la ciudad de Santa Marta (Nuevo Reino de Granada establecieron acuerdos con representantes de la Corona española en esta zona de frontera del Caribe colombiano como mecanismo para evitar su exterminio y a cambio recibieron de esta un tratamiento especial. Primero recibieron una rebaja en sus tributos, luego sus caciques buscaron la exoneración de tributos de su familia, más tarde fueron congregados en pueblos de indios y recibieron tierras comunales. Así mismo, se señala que los indígenas una vez obtuvieron la categoría de vecinos avanzaron en la utilización de la normativa político/administrativa para reclamar a su favor derechos adquiridos que consideraban hacían parte de ese pacto de reciprocidad y que eran puestos en duda por vecinos/notables de la ciudad de Santa Marta: exenciones en el tributo y, sobre todo, acceso a tierras comunales.

  12. UJI VIABILITAS DAN PERKEMBANGAN SERBUK SARI BUAH NAGA PUTIH (HYLOCEREUS UNDATUS (HAW. BRITTON & ROSE, MERAH (HYLOCEREUS POLYRHIZUS (WEB. BRITTON & ROSE DAN SUPER MERAH (HYLOCEREUS COSTARICENSIS (WEB. BRITTON & ROSE SETELAH PENYIMPANAN

    Directory of Open Access Journals (Sweden)

    NI KADEK YUNITA SARI

    2010-12-01

    Full Text Available The aim of the research was to determine pollen viability, pollen tube length and pollen development of white, red and super red dragon fruit after storage at different temperatures and times. The method used to test pollen viability was hanging drop technique and to observe the development of pollen used acetolysis techniques. The results showed viability and pollen tube length of white, red and super red dragon fruit after storage at temperature of 10° C and -20° C for 1, 2 and 3 weeks decreased (66% and 25%, tended to increase (2% after 4 weeks. Viability and pollen tube length decreased (100% after storage at 30° C for 4 weeks. Pollen development of white, red and super red dragon fruit after storage at 30°C, 10°C and -20°C for 1 to 4 weeks showed the majority of pollen consists of uninucleat and binucleat.

  13. Adjudicación y conflictos por tierras comunales en los pueblos de indios de Ciénaga y Gaira en la gobernación de Santa Marta, 1700-1810

    OpenAIRE

    Hugues R. Sánchez Mejía

    2012-01-01

    Este artículo examina la forma como los indígenas ubicados en varios pueblos cercanos a la ciudad de Santa Marta (Nuevo Reino de Granada) establecieron acuerdos con representantes de la Corona española en esta zona de frontera del Caribe colombiano como mecanismo para evitar su exterminio y a cambio recibieron de esta un tratamiento especial. Primero recibieron una rebaja en sus tributos, luego sus caciques buscaron la exoneración de tributos de su familia, más tarde fueron congregados en pue...

  14. Adjudicación y conflictos por tierras comunales en los pueblos de indios de Ciénaga y Gaira en la gobernación de Santa Marta, 1700-1810

    Directory of Open Access Journals (Sweden)

    Hugues R. Sánchez Mejía

    2012-08-01

    Full Text Available Este artículo examina la forma como los indígenas ubicados en varios pueblos cercanos a la ciudad de Santa Marta (Nuevo Reino de Granada establecieron acuerdos con representantes de la Corona española en esta zona de frontera del Caribe colombiano como mecanismo para evitar su exterminio y a cambio recibieron de esta un tratamiento especial. Primero recibieron una rebaja en sus tributos, luego sus caciques buscaron la exoneración de tributos de su familia, más tarde fueron congregados en pueblos de indios y recibieron tierras comunales. Así mismo, se señala que los indígenas una vez obtuvieron la categoría de vecinos avanzaron en la utilización de la normativa político/administrativa para reclamar a su favor derechos adquiridos que consideraban hacían parte de ese pacto de reciprocidad y que eran puestos en duda por vecinos/notables de la ciudad de Santa Marta: exenciones en el tributo y, sobre todo, acceso a tierras comunales.

  15. Neutron diffraction investigation of liquid alkali metal-gallium alloys. Giant cluster formation?

    NARCIS (Netherlands)

    Alvarez, M; Lomba, E; Verkerk, P; van der Aart, SA; Bionducci, M; Mirebeau, [No Value; van der Lugt, W

    Neutron diffraction experiments were performed on the liquid alloys NaGa, NaGa3, KGa3 and CsGa3. The structure factors of KGa3 and CsGa3 display prepeaks at small wavenumbers (0.64 and 0.61 (A) over circle -1, respectively). This may indicate the existence of extremely large aggregates of atoms in

  16. Developmental stages of chaetognaths in the coastal environs of Bombay

    Digital Repository Service at National Institute of Oceanography (India)

    Ramaiah, Neelam; Nair, V.R.

    Abundances of developmental stages-juveniles, developing and mature-of Sagitta bedoti, S. oceania, S. enflata and S. robusta were recorded from the coastal, estuarine and creek environs of Bombay (Maharashtra, India) from October 1985 to September...

  17. Biodiversity of chaetognaths of the Andaman Sea, Indian Ocean.

    Digital Repository Service at National Institute of Oceanography (India)

    Nair, V.R.; Gireesh, R.

    with the upward movement of species. In the coastal waters either S. enflata or S. neglecta dominated. Recently described Krohnitta balagopali and Sagitta meenakshiae are endemic to the area. Maximum species diversity was observed at the thermocline. Invariably...

  18. Untitled

    Indian Academy of Sciences (India)

    Ctenophora: (Pleurobrachia globosa). Chaetognatha: (Sagitta enflata; S. bedoti; S. robusta). Copepoda : (Paracalanus aculeatus, Labidocera pectinata; Labidocera kroyeri var. gallensis; Acrocalanus monachus; Eucalanus crassus;. Canthocalanus pauper; Centropages sp.) Cumacea: (Eocuma sp., Paradiastylis culicoides).

  19. Diseases of chaetognaths from the Arabian Sea

    Digital Repository Service at National Institute of Oceanography (India)

    Santhakumari, V.

    Three different diseases, provisionally assigned as spot disease, swell disease and tail rot disease, were observed in chaetognaths Sagitta enflata Grassi and S. bedoti Bernaneck. The first two diseases showed high percentage of occurrence. The spot...

  20. A Holotrichous ciliate from the coelom of Chaetognaths

    Digital Repository Service at National Institute of Oceanography (India)

    Santhakumari, V.

    A holotrichous ciliate was observed from the body cavity of Chaetognaths Sagitta enflata and S. bedoti collected from the zooplankton samples at Cape Comorin and Tuticorin (Tamil Nadu, India). Species were examined for infected parasites...

  1. Neuston composition in central Arabian Sea

    Digital Repository Service at National Institute of Oceanography (India)

    Nair, S.R.S.; Achuthankutty, C.T.; Haridas, P.; Nair, V.R.

    and Corycaeus spp commonly occurred in the surface layer. Chaetognaths were dominated by Sagitta enflata and decapod Crustacea by Lucifer typus. Many other taxonomical groups were also present, but in small numbers. Significant variations were not observed...

  2. Using otolith morphometric and morphology characteristics to identify carangids species in the Persian Gulf and Oman Sea

    OpenAIRE

    Mansourkiaei, Ana

    2010-01-01

    In a survey on 524 specimens from 18 different species belonging to the Carangidae family collected from The Persian Gulf, otolithes (Sagittae) are extracted from under gills region. After washing, their morphometric parameters measured. These parameters are otolith length, width, weight and length of antirostrum, width and length of rostrum, width in right and left sagittae. In addition to the otolith outline, mode position and mode opening of the Sulcus acusticus was examined. Data indicate...

  3. Otolith morphology varies between populations, sexes and male alternative reproductive tactics in a vocal toadfish Porichthys notatus.

    Science.gov (United States)

    Bose, A P H; Adragna, J B; Balshine, S

    2017-01-01

    In this study, the morphology of sagittal otoliths of the plainfin midshipman fish Porichthys notatus was compared between populations, sexes and male alternative reproductive phenotypes (known as 'type I males or guarders' and 'type II males or sneakers'). Sagitta size increased with P. notatus size and changes in shape were also detected with increasing body size. Porichthys notatus sagittae begin as simple rounded structures, but then elongate as they grow and take on a more triangular and complex shape with several prominent notches and indentations along the dorsal and caudal edges. Moreover, the sagittae of the two geographically and genetically distinct populations of P. notatus (northern and southern) differed in shape. Porichthys notatus from the north possessed taller sagittae with deeper caudal indentations compared to P. notatus from the south. Sagitta shape also differed between females and males of the conventional guarder tactic. Furthermore, guarder males had smaller sagittae for their body size than did sneaker males or females. These differences in sagittal otolith morphology are discussed in relation to ecological and life history differences between the sexes and male tactics of this species. This is the first study to investigate teleost otolith morphology from the perspective of alternative reproductive tactics. © 2016 The Fisheries Society of the British Isles.

  4. Otolith development in larval and juvenile Schizothorax davidi: ontogeny and growth increment characteristics

    Science.gov (United States)

    Yan, Taiming; Hu, Jiaxiang; Cai, Yueping; Xiong, Sen; Yang, Shiyong; Wang, Xiongyan; He, Zhi

    2017-09-01

    Laboratory-reared Schizothorax davidi larvae and juveniles were examined to assess the formation and characteristics of David's schizothoracin otoliths. Otolith development was observed and their formation period was verified by monitoring larvae and juveniles of known age. The results revealed that lapilli and sagittae developed before hatching, and the first otolith increment was identified at 2 days post hatching in both. The shape of lapilli was relatively stable during development compared with that of sagittae; however, growth of four sagittae and lapilli areas was consistent, but the posterior area grew faster than the anterior area and the ventral surface grew faster than the dorsal surface. Similarly, the sum length of the radius of the anterior and posterior areas on sagittae and lapilli were linearly and binomially related to total fish length, respectively. Moreover, daily deposition rates were validated by monitoring knownage larvae and juveniles. The increase in lapilli width was 1.88±0.080 0 μm at the ninth increment, which reached a maximum and the decreased gradually toward the otolith edge, whereas that of sagittae increased more slowly. These results illustrate the developmental biology of S. davidi, which will aid in population conservation and fish stock management.

  5. Characterization of gana-1, a Caenorhabditis elegans gene encoding a single ortholog of vertebrate α-galactosidase and α-N-acetylgalactosaminidase

    Directory of Open Access Journals (Sweden)

    Kostrouchová Marta

    2005-01-01

    Full Text Available Abstract Background Human α-galactosidase A (α-GAL and α-N-acetylgalactosaminidase (α-NAGA are presumed to share a common ancestor. Deficiencies of these enzymes cause two well-characterized human lysosomal storage disorders (LSD – Fabry (α-GAL deficiency and Schindler (α-NAGA deficiency diseases. Caenorhabditis elegans was previously shown to be a relevant model organism for several late endosomal/lysosomal membrane proteins associated with LSDs. The aim of this study was to identify and characterize C. elegans orthologs to both human lysosomal luminal proteins α-GAL and α-NAGA. Results BlastP searches for orthologs of human α-GAL and α-NAGA revealed a single C. elegans gene (R07B7.11 with homology to both human genes (α-galactosidase and α-N-acetylgalactosaminidase – gana-1. We cloned and sequenced the complete gana-1 cDNA and elucidated the gene organization. Phylogenetic analyses and homology modeling of GANA-1 based on the 3D structure of chicken α-NAGA, rice α-GAL and human α-GAL suggest a close evolutionary relationship of GANA-1 to both human α-GAL and α-NAGA. Both α-GAL and α-NAGA enzymatic activities were detected in C. elegans mixed culture homogenates. However, α-GAL activity on an artificial substrate was completely inhibited by the α-NAGA inhibitor, N-acetyl-D-galactosamine. A GANA-1::GFP fusion protein expressed from a transgene, containing the complete gana-1 coding region and 3 kb of its hypothetical promoter, was not detectable under the standard laboratory conditions. The GFP signal was observed solely in a vesicular compartment of coelomocytes of the animals treated with Concanamycin A (CON A or NH4Cl, agents that increase the pH of the cellular acidic compartment. Immunofluorescence detection of the fusion protein using polyclonal anti-GFP antibody showed a broader and coarsely granular cytoplasmic expression pattern in body wall muscle cells, intestinal cells, and a vesicular compartment of

  6. Verification of otolith identity used by fisheries scientists for aging channel catfish

    Science.gov (United States)

    Long, James M.; Stewart, David R.

    2010-01-01

    Previously published studies of the age estimation of channel catfish Ictalurus punctatus based on otoliths have reported using the sagittae, whereas it is likely they were actually using the lapilli. This confusion may have resulted because in catfishes (ostariophyseans) the lapilli are the largest of the three otoliths, whereas in nonostariophysean fish the sagittae are the largest. Based on (1) scanning electron microscope microphotographs of channel catfish otoliths, (2) X-ray computed tomography scans of a channel catfish head, (3) descriptions of techniques used to removed otoliths from channel catfish reported in the literature, and (4) a sample of channel catfish otoliths received from fisheries biologists from around the country, it is clear that lapilli are most often used for channel catfish aging studies, not sagittae, as has been previously reported. Fisheries scientists who obtain otoliths from channel catfish can use the information in this paper to correctly identify otolith age.

  7. Ontogenetic development of otoliths in Alligator Gar

    Science.gov (United States)

    Long, James M.; Snow, Richard A.

    2016-01-01

    The Alligator Gar Atractosteus spatula is a species of conservation concern throughout its range, and better definition of otoliths during early development would aid understanding its life history and ecology. We conducted X-ray computed tomography scans, scanning electron microscopy, and light microscopy to examine the three pairs of otoliths and how they developed over time in relation to fish size and age. The sagittae are the largest, possessing distinct dorsal and ventral lobes covered with small otoconia concentrated in the sulcul region. The sagittae exhibited allometric growth, increasing more rapidly in the ventral lobe than in the dorsal. The asterisci were smaller and also exhibited small otoconia on their surface, but much less than the sagittae. The lapilli were oriented laterally, in contrast to the sagittae and asterisci, which were oriented vertically, with a hump on the dorsum and very large otoconia on the lateral surface that appeared to fuse into the main otolith as the fish grew. Based on size measurements and ring counts in all three pairs of otoliths from 101 known-age Alligator Gar sampled weekly through 91 d after hatch, we developed regression models to examine otolith growth and predict age. All relationships were significant and highly explanatory, but the strongest relationships were between otolith and fish size (for measurements from sagittae) and for age predictions from the lapillus. Age prediction models all resulted in a slope near unity, indicating that ring deposition occurred approximately daily. The first ring in sagittae and lapilli corresponded to swim-up, whereas the first ring formed in asterisci approximately 8 d after swim-up. These results fill a gap in knowledge and can aid understanding of evolutionary processes as well as provide useful information for management and conservation.

  8. Hearing capacities and otolith size in two ophidiiform species (Ophidion rochei and Carapus acus).

    Science.gov (United States)

    Kéver, Loïc; Colleye, Orphal; Herrel, Anthony; Romans, Pascal; Parmentier, Eric

    2014-07-15

    Numerous studies have highlighted the diversity of fish inner ear morphology. However, the function of the shape, size and orientation of the different structures remains poorly understood. The saccule (otolithic endorgan) is considered to be the principal hearing organ in fishes and it has been hypothesized that sagitta (saccular otolith) shape and size affect hearing capacities: large sagittae are thought to increase sensitivity. The sagittae of many ophidiids and carapids occupy a large volume inside the neurocranium. Hence they are a good structure with which to test the size hypothesis. The main aim of this study was to investigate hearing capacities and inner ear morphology in two ophidiiform species: Ophidion rochei and Carapus acus. We used a multidisciplinary approach that combines dissections, μCT-scan examinations and auditory evoked potential techniques. Carapus acus and O. rochei sagittae have similar maximal diameters; both species have larger otoliths than many non-ophidiiform species, especially compared with the intra-neurocranium volume. Both species are sensitive to sounds up to 2100 Hz. Relative to the skull, O. rochei has smaller sagittae than the carapid, but better hearing capacities from 300 to 900 Hz and similar sensitivities at 150 Hz and from 1200 to 2100 Hz. Results show that hearing capacities of a fish species cannot be predicted only based on sagitta size. Larger otoliths (in size relative to the skull) may have evolved mainly for performing vestibular functions in fishes, especially those species that need to execute precise and complex movements. © 2014. Published by The Company of Biologists Ltd.

  9. Morphological reconstruction of Roman arrowheads from Iulia Concordia: Italy

    Science.gov (United States)

    Salvemini, Filomena; Grazzi, Francesco; Angelini, Ivana; Vontobel, Peter; Vigoni, Alberto; Artioli, Gilberto; Zoppi, Marco

    2014-06-01

    Iulia Concordia is an important Roman settlement especially known for the production of weapons during the Roman Empire. Excavations of the area revealed the evidence of metal-working activities and a huge number of well preserved arrowheads (sagittae) were found. In order to investigate the conservation state of the finds and to shed light about the production processes used by Roman for the manufacturing of sagittae, a neutron tomography analysis was performed on NEUTRA beam line at the Paul Scherrer Institut in Switzerland. Here, we present results from our investigation conducted on 18 samples, disclosing, in a non-invasive way, the morphological characteristic related to the ancient Roman working techniques.

  10. The gene YALI0E20207g from Yarrowia lipolytica encodes an N-acetylglucosamine kinase implicated in the regulated expression of the genes from the N-acetylglucosamine assimilatory pathway.

    Directory of Open Access Journals (Sweden)

    Carmen-Lisset Flores

    Full Text Available The non-conventional yeast Yarrowia lipolytica possesses an ORF, YALI0E20207g, which encodes a protein with an amino acid sequence similar to hexokinases from different organisms. We have cloned that gene and determined several enzymatic properties of its encoded protein showing that it is an N-acetylglucosamine (NAGA kinase. This conclusion was supported by the lack of growth in NAGA of a strain carrying a YALI0E20207g deletion. We named this gene YlNAG5. Expression of YlNAG5 as well as that of the genes encoding the enzymes of the NAGA catabolic pathway-identified by a BLAST search-was induced by this sugar. Deletion of YlNAG5 rendered that expression independent of the presence of NAGA in the medium and reintroduction of the gene restored the inducibility, indicating that YlNag5 participates in the transcriptional regulation of the NAGA assimilatory pathway genes. Expression of YlNAG5 was increased during sporulation and homozygous Ylnag5/Ylnag5 diploid strains sporulated very poorly as compared with a wild type isogenic control strain pointing to a participation of the protein in the process. Overexpression of YlNAG5 allowed growth in glucose of an Ylhxk1glk1 double mutant and produced, in a wild type background, aberrant morphologies in different media. Expression of the gene in a Saccharomyces cerevisiae hxk1 hxk2 glk1 triple mutant restored ability to grow in glucose.

  11. UAM JOURNAL 2009

    African Journals Online (AJOL)

    destruction (Fox and Madsen, 1997), inadequate food resources and ... Apus cafer. Apodidae. White Rumped Swift 3.46. -. Estrilda bengala. Estrildidae Red. CheckedCordon Bleu 9.21. 0.54. Streptopelia decipiens. Columbidae. Mourning Dove. 2.14. 1.88 ..... habitat behaviour and not on the structure of the habitat itself.

  12. NIGERIAN VETERINARY JOURNAL

    African Journals Online (AJOL)

    ADEYEYE

    birds were also analysed for haemoparasites, haematological and serum biochemistry parameters. About 76.67% of the birds were positive for different ... domesticated for food and eggs and are eaten by people. Due to the fact that they ... Collection of Birds and Sample Size. A total of 30 pigeons (Streptopelia decipiens) ...

  13. Age and growth determination in Citharinus citharus (Geoffrey and ...

    African Journals Online (AJOL)

    An observation of the rings impressed on the polished sagittae otoliths of Citharinus citharus in the present study revealed reliable age data. Two daily rings were counted on the otoliths. These rings resulted from other factors including growth increments. Two types of rings (periodic and daily) were described. Two periodic ...

  14. A morphological description of the sagittal otoliths of two mormyrids ...

    African Journals Online (AJOL)

    The morphology of the sagittal otoliths of two South African mormyrid fish, Marcusenius macrolepidotus and Petrocephalus catostoma, were studied to determine possible morphological significance. The sagittae of M. macrolepidotus and P. catostoma are kidney-shaped and oblong, respectively. The ventral margin is ...

  15. Concentration and toxicity of some metals in zooplankton from nearshore waters of Bombay

    Digital Repository Service at National Institute of Oceanography (India)

    Gajbhiye, S.N.; Nair, V.R.; Narvekar, P.V.; Desai, B.N.

    in zooplankton collected from all stations. Bioassay tests were carried out for evaluating the acute toxicity of Cu and Ni on selected groups of zooplankton. Cu was more toxic than Ni. Among the different organisms tested Sagitta, Lucifer, Ctenophores and Medusae...

  16. Zooplankton composition in Dharamtar creek adjoining Bombay harbour

    Digital Repository Service at National Institute of Oceanography (India)

    Tiwari, L.R.; Nair, V.R.

    turnover of 29 ton C.km/2. A major share of the zooplankton community was contributEd. by copepods (71.9%), decapods (11.4%) and chaetognaths (8.3%). Copepod diversity was maximum in October. Three species of chaetognaths were found in the area and Sagitta...

  17. Population abundance and species composition of chaetognaths in the Bombay harbour-Thana and Bassein creek estuarine complex

    Digital Repository Service at National Institute of Oceanography (India)

    Ramaiah, Neelam; Nair, V.R.

    to total zooplankton biomass varied from as low as 0.01 to as high as 25.78%. Unlike earlier studies in the same area, the present study recorded the presence of only 4 species viz. Sagitta bedoti, S. enflata and S. bedoti being the most common, dominant...

  18. The structure of hyperthermophilic β-N-acetylglucosaminidase reveals a novel dimer architecture associated with the active site.

    Science.gov (United States)

    Mine, Shouhei; Kado, Yuji; Watanabe, Masahiro; Fukuda, Yohta; Abe, Yoshito; Ueda, Tadashi; Kawarabayasi, Yutaka; Inoue, Tsuyoshi; Ishikawa, Kazuhiko

    2014-11-01

    The β-N-acetylglucosaminidase from the hyperthermophilic bacteria Thermotoga maritima (NagA) hydrolyzes chitooligomers into monomer β-N-acetylglucosamine. Although NagA contains a highly conserved sequence motif found in glycoside hydrolase (GH) family 3, it can be distinguished from other GH family 3 β-N-acetylglucosaminidases by its substrate specificity and biological assembly. To investigate its unique structure around the active site, we determined the crystal structure of NagA at a resolution of 2.43 Å. The NagA forms a dimer structure in which the monomer structure consists of an N- and a C-terminal domain. The dimer structure exhibits high solvation free energy for dimer formation. From mutagenesis analyses, the catalytic nucleophile and general acid-base residues were supposed to be Asp245 and His173, respectively. The most striking characteristic of NagA was that it forms the active site cleft from the N-terminal domain and the C-terminal domain of the next polypeptide chain, whereas the other two-domain GH family 3 enzymes form the site within the same molecule. Another striking feature is that the loops located around the active site show high flexibility. One of the flexible loops contains the general acid-base His173 and was thought to be involved in substrate distortion during catalysis. In addition, a loop in close contact with the active site, which comes from the C-terminal domain of the next polypeptide chain, contains a region of high B-factor values, indicating the possibility that the C-terminal domain is involved in catalysis. These results suggest that the dimer structure of NagA is important for its activity and thermostability. Structural data are available in the Protein Data Bank under accession number 3WO8. © 2014 FEBS.

  19. 78 FR 15691 - Certain Frozen Warmwater Shrimp From India; Preliminary Results of Antidumping Duty...

    Science.gov (United States)

    2013-03-12

    ... Memorandum to James Maeder, Director, Office 2, AD/CVD Operations, from the Team entitled, ``Whether to... & Sons (P) Ltd 3.23 Naga Hanuman Fish Packers 3.23 Naik Frozen Foods 3.23 Naik Frozen Foods Pvt., Ltd 3...

  20. Author Details

    African Journals Online (AJOL)

    Sunil, Atkuru Veera Venkata Naga Krishna. Vol 6, No 1 (2015) - Articles Use of electrophilic coupling reagents, 3-methyl-2-benzothiazolinone hydrazone hydrochloride and 4-amino antipyrine, for the spectrophotometric analysis of vardenafil in tablet dosage forms. Abstract PDF. ISSN: 1821-7613. AJOL African Journals ...

  1. Browse Title Index

    African Journals Online (AJOL)

    Items 51 - 57 of 57 ... ... of electrophilic coupling reagents, 3-methyl-2-benzothiazolinone hydrazone hydrochloride and 4-amino antipyrine, for the spectrophotometric analysis of vardenafil in tablet dosage forms, Abstract PDF. Atkuru Veera Venkata Naga Krishna Sunil, Chandra Bala Sekaran, Tamanampudi Varahala Reddy.

  2. Main: 1UHN [RPSD[Archive

    Lifescience Database Archive (English)

    Full Text Available ineered: Yes Metal Binding Protein M.Nagae, A.Nozawa, N.Koizumi, H.Sano, H.Hashimot...n 2 Name=Cbl2; Arabidopsis Thaliana Molecule: Calcineurin B-Like Protein 2; Chain: A; Fragment: Residues 32-220; Synonym: Atcbl2; Eng

  3. Synthesis and optical properties of biphenylene ethynylene co ...

    Indian Academy of Sciences (India)

    365–374. c Indian Academy of Sciences. DOI 10.1007/s12039-015-0789-y. Synthesis and optical properties of biphenylene ethynylene co-polymers and their model compounds. OKHIL K NAGa, KAZI M ANIS-UL-HAQUEa, DIPEN DEBNATHa, ROCKSHANA BEGUMa,. MUHAMMAD YOUNUSa,∗, NAZIA CHAWDHURYb, ...

  4. Copper catalysed synthesis of indolylquinazolinone alkaloid ...

    Indian Academy of Sciences (India)

    School of Chemistry, University of Hyderabad, Hyderabad 500 046, India e-mail: rnsc@uohyd.ernet.in; naga_indole@yahoo.co.in. MS received 7 January 2014; ... journals.1–6 Moreover, quinazolinone derivatives have drawn renewed attention as new drug delivery technolo- gies and exhibit a wide range of biological and ...

  5. Characterization of Botrytis cinerea isolates from chickpea: DNA ...

    African Journals Online (AJOL)

    Administrator

    2010-11-15

    Nov 15, 2010 ... Characterization of Botrytis cinerea isolates from chickpea: DNA polymorphisms, cultural, morphological and virulence characteristics. Suresh Pande1, Mamta Sharma1*, G. Krishna Kishore1, L. Shivram2 and U. Naga Mangala1. 1International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), ...

  6. African Journal of Biotechnology - Vol 9, No 46 (2010)

    African Journals Online (AJOL)

    Characterization of Botrytis cinerea isolates from chickpea: DNA polymorphisms, cultural, morphological and virulence characteristics · EMAIL FREE FULL TEXT EMAIL FREE FULL TEXT · DOWNLOAD FULL TEXT DOWNLOAD FULL TEXT. Suresh Pande, Mamta Sharma, G. Krishna Kishore, L. Shivram, U. Naga Mangala ...

  7. Publications | Page 262 | IDRC - International Development ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    What determines ICT access in the Philippines? When bad weather strikes, university students in parts of the Philippines check their cell phones for text messages telling them whether or not classes have been cancelled. In Naga City, residents looking for a building permit, a.

  8. Synthesis and Antimicrobial Activity of Some New a ...

    African Journals Online (AJOL)

    NJD

    2007-03-15

    Mar 15, 2007 ... irradiation (2 min) conditions. Thin layer chromatography. (TLC) was employed to determine ... *To whom correspondence should be addressed. E-mail: naga_raju04@yahoo.co.in. Scheme ... residue was purified by column chromatography using 60–120 mesh silica gel as adsorbent and hexane and ethyl ...

  9. Sustainable agriculture

    International Development Research Centre (IDRC) Digital Library (Canada)

    Remarkable changes have flowed from the work of NEPED — the Nagaland. Environmental Protection and Economic. Development project — funded by the government of Nagaland, IDRC, and the. Canadian International Development. Agency from 1994 to 2006. For generations, Naga farmers prac- tised subsistence ...

  10. Acknowledgements

    Indian Academy of Sciences (India)

    A.P.Tiwari, Biju Joseph Mukkada, Saket Kumar, and Dharmendar Ramdass, Sanjeev Kumar (Engineering Project Assistants). Siva Sankari, B. Lakshmi, Ankit Jain and Sujeetha (M.Sc. Project) ... D.S.S. Hembram, Mukesh Agrawal, Vijayanand Chandrasekharan, Naga Boopathy, Sharath (Project Assistants) ...

  11. Kimura's disease: A case presentation of postauricular swelling ...

    African Journals Online (AJOL)

    Kimura's disease: A case presentation of postauricular swelling. A Rajesh, T Prasanth, V.C. Naga Sirisha, M.D.S. Azmi. Abstract. Kimura's disease (KD) is a rare chronic inflammatory disease of subcutaneous tissues and occurs predominantly in head and neck region. It is seen primarily in young Asian males. Typical clinical ...

  12. 76 FR 41203 - Certain Frozen Warmwater Shrimp From India: Final Results of Antidumping Duty Administrative...

    Science.gov (United States)

    2011-07-13

    .... John & Sons (P) Ltd 1.69 Naga Hanuman Fish Packers 1.69 Naik Frozen Foods 1.69 Naik Seafoods Ltd 1.69... wet viscous layer containing egg and/or milk, and par-fried. The products covered by this order are... & Exports P. Ltd. (6) BMR Exports (7) Castlerock Fisheries Pvt. Ltd. (8) Coastal Corporation Ltd. (9...

  13. 76 FR 12025 - Certain Frozen Warmwater Shrimp From India: Preliminary Results of Antidumping Duty...

    Science.gov (United States)

    2011-03-04

    .... John & Sons (P) Ltd 1.69 Naga Hanuman Fish Packers 1.69 Naik Frozen Foods 1.69 Naik Seafoods Ltd 1.69... viscous layer containing egg and/or milk, and par-fried. The products covered by this order are currently... Company Ltd. (3) Baby Marine International (4) Baby Marine Sarass (5) Blue Water Foods & Exports P. Ltd...

  14. in River Oluwa, Ondo State, Nigeria

    African Journals Online (AJOL)

    Administrator

    (Osteichthyes: Siluriformes) in Kainji Lake,. Nigeria. Hydrobiologia,57: 197–207. Olojo E. A. A., Olurin K. B. and Osikoya O. J. (2003). Food and feeding habits of Synodontis nigrita from the Osun Rivers, SW Nigeria. NAGA26(4): 21–24. Pillay T. V. R. (1990). Aquaculture: Principles and. Practices. Fishing News Books, Oxford ...

  15. Journal of Biosciences | Indian Academy of Sciences

    Indian Academy of Sciences (India)

    Home; Journals; Journal of Biosciences. T Naga Sowjanya. Articles written in Journal of Biosciences. Volume 35 Issue 4 December 2010 pp 539-546 Articles. Translocations used to generate chromosome segment duplications in Neurospora can disrupt genes and create novel open reading frames · Parmit K Singh ...

  16. Completion of the ITER central solenoid model coils installation

    International Nuclear Information System (INIS)

    Tsuji, H.

    1999-01-01

    The short article details how dozens of problems, regarding the central solenoid model coils installation, were faced and successfully overcome one by one at JAERI-Naga. A black and white photograph shows K. Kwano, a staff member of the JAERI superconducting magnet laboratory, to be still inside the vacuum tank while the lid is already being brought down..

  17. What determines ICT access in the Philippines? | IDRC ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    2011-02-07

    Feb 7, 2011 ... When bad weather strikes, university students in parts of the Philippines check their cell phones for text messages telling them whether or not classes have been cancelled. In Naga City, residents looking for a building permit, a library card, or even a loan can download an application from the city's Web site.

  18. Acknowledgements

    Indian Academy of Sciences (India)

    Dr. B. Rajakumar, D. Anandaraj, Janardan Kundu, Harish Chakravarty (Ph.D. students). D.S.S. Hembram, Mukesh Agrawal, Vijayanand Chandrasekharan, Naga Boopathy, Sharath (Project Assistants). Dr. Dinesh Bilehal and Dr. Amit Pathak (Postdocs). Knowledge and Wisdom (Yellow is color of wisdom: Google). Profs.

  19. supp5a.doc

    Indian Academy of Sciences (India)

    Crystal Structure and Solid-State Properties of Discrete Hexa Cationic Trinuclear Zinc Triazole Cluster. Chatla Naga Babu, Paladugu Suresh, Arruri Sathyanarayana, Prasenjit Das, and Ganesan. Prabusankar*. Department of Chemistry, Indian Institute of Technology Hyderabad, ODF Estate,. Yeddumailaram, Telangana ...

  20. Info (TR Rao)

    Indian Academy of Sciences (India)

    ) measured in Scoville Units (SUs). Pure capsaicin: 16 M SU. Smoking Ed's Carolina reaper: 1.47 MSU. Tezpur mirchi: 0.855 MSU; 163 times the jalapeno pepper. Bhut Jolokia 1.6M; infinity chilli: 1.2M, Naga Viper: 1.4 M; Trinidad Moruga ...

  1. Galectin-9

    Indian Academy of Sciences (India)

    2016-07-16

    Jul 16, 2016 ... Department of Neurobiology and Genetics, Division of Disease Biology, Rajiv Gandhi Centre for. Biotechnology ... [John S and Mishra R 2016 Galectin-9: From cell biology to complex disease dynamics. J. Biosci. 507–534]. 1. .... bone of S6 strand of oxygen molecules (Nagae et al. 2006). The mouse Gal-9 ...

  2. Host size-dependent anisakid infection in Baltic cod Gadus morhua associated with differential food preferences

    DEFF Research Database (Denmark)

    Zuo, Shaozhi; Huwer, Bastian; Bahlool, Qusay

    2016-01-01

    A significant increase in the infection level of Baltic cod Gadus morhua with the anisakid nematode larvae Contracaecum osculatum and Pseudoterranova decipiens has been recorded during recent years due to the expanding local population of grey seals Halichoerus grypus, which act as final hosts...... for these parasites. Here, we report from an investigation of 368 cod (total length [TL] 6-49 cm; caught in ICES Subdivision 25) that the infection level of juvenile cod (TL 6-30 cm) with larvae of C. osculatum and P. decipiens is absent or very low, whereas it increases drastically in larger cod (TL 31-48 cm...... suggest that the C. osculatum life cycle in the Baltic Sea includes grey seals as final hosts, sprat as the first transport host and cod as second transport host. It may be speculated that sprat obtain infection by feeding on copepods and/or cladocerans, which could serve as the first intermediate hosts...

  3. Seed coat sculpturing in Halophila

    OpenAIRE

    Japar, Sidik Bujang; Muta, Harah Zakaria; Suzalina, Akma Awing; Nojima, Satoshi; Ogawa, Hisao

    2006-01-01

    This study furnishes information on external morphology of the seed coats of selected Halophila. Fruiting plants of Halophila beccarii, H. ovalis, H. decipiens, Halophila sp. were collected from various locations around Malaysia and including Halophila stipulacea from Mauritus. Seeds extracted from mature fruits were fixed in 2.5% glutaradehyde. Fixed seeds were washed in 0.1M Sodium cacodylate buffer at 4℃ for 10 minutes. The washing procedure was repeated three times. The seeds were dehydra...

  4. Diagnosing Medical Parasites: A Public Health Officers Guide to Assisting Laboratory and Medical Officers

    Science.gov (United States)

    2009-01-01

    produced by that tapeworm, either through fecal contamination or, possibly, from proglottids carried into the stomach by reverse peristalsis . Once...121 - Illustration 7-2. Adult stages of Anisakis simplex or Pseudoterranova decipiens reside in the stomach of marine mammals, where they...After ingestion of the raw fish by humans, the larvae penetrate the intestinal wall resulting in inhabitation of the stomach or duodenum, but can be

  5. Studies on stoneflies (Plecoptera) of Colorado with eastern faunal affinities, including a new state record of the midwestern salmonfly, Pteronarcys pictetii hagen (Plecoptera: Pteronarcyidae)

    Science.gov (United States)

    Zuellig, R.E.; Kondratieff, B.C.; Hood, R.W.

    2006-01-01

    Pteronarcys pictetii Hagen nymphs were collected and reared from the South Platte River at Julesburg in eastern Colorado. Including P. pictetii, eight species are now known from Colorado that exhibit eastern North American affinities, Paracapnia angulata Hanson, Taeniopteryx burksi Ricker and Ross, Taeniopteryx parvula Banks, Acroneuria abnormis (Newman), Perlesta decipiens (Walsh), Isoperla bilineata (Say), and Isoperla marlynia (Needham and Claassen). A brief discussion of the dispersal of these species into Colorado is presented.

  6. Preliminary results of the empirical validation of daily increments in otoliths of jack mackerel Trachurus symmetricus murphyi (Nichols, 1920 marked with oxytetracycline

    Directory of Open Access Journals (Sweden)

    Miguel Araya

    2003-12-01

    Full Text Available The frequency of microincrement formation in sagittae otoliths of jack mackerel Trachurus symmetricus was validated using experiments on captive fish. Adult jack mackerel were injected with a dose of 100 mg of oxytetracycline/kg of fish. A second injection was performed 30 days later. The fish were then sacrificed and their sagittae otoliths were extracted. Thin sections of the otoliths were prepared and observed through an epifluorescent microscope using ultraviolet light. Two fluorescent marks corresponding to the two injections were clearly visible. The average number of microincrements between the two fluorescent marks was 29 (n=10; S.D.=1.63 and the median was 29.3. The Wilcoxon signed-rank test indicated that this value was not significantly different from 30. This result indicates that microincrements in otoliths of adult jack mackerel of between 28.4 and 37.7 cm fork length are formed with a daily frequency.

  7. A web-based environment for shape analysis of fish otoliths. The AFORO database

    Directory of Open Access Journals (Sweden)

    Antoni Lombarte

    2006-03-01

    Full Text Available We present an automatic system for describing and identifying fish otolith shapes combining information technologies with modern advances in signal analysis. As a major novelty with respect to past studies the system includes wavelets (WT and curvature space scale (CSS analyses that have been shown to provide local morphologic information and characteristics (landmarks of the sagitta otolith outline for non-specialists. By applying this electronic catalogue directly the system is very helpful for determining teleostean fish size, population and species. Both the electronic catalogue and the shape analysis are implemented through the AFORO database, which at present contains more than 1250 high resolution images of the left sagitta from 292 species and 94 families of teleostan fishes sampled mainly in Mediterranean and Antarctic waters.

  8. Quantitative Assessment of First Annular Pulley and Adjacent Tissues Using High-Frequency Ultrasound

    OpenAIRE

    Lin, Yi-Hsun; Yang, Tai-Hua; Wang, Shyh-Hau; Su, Fong-Chin

    2017-01-01

    Due to a lack of appropriate image resolution, most ultrasound scanners are unable to sensitively discern the pulley tissues. To extensively investigate the properties of the A1 pulley system and the surrounding tissues for assessing trigger finger, a 30 MHz ultrasound system was implemented to perform in vitro experiments using the hypodermis, A1 pulley, and superficial digital flexor tendon (SDFT) dissected from cadavers. Ultrasound signals were acquired from both the transverse and sagitta...

  9. Validation of daily increments periodicity in otoliths of spotted gar

    Science.gov (United States)

    Snow, Richard A.; Long, James M.; Frenette, Bryan D.

    2017-01-01

    Accurate age and growth information is essential in successful management of fish populations and for understanding early life history. We validated daily increment deposition, including the timing of first ring formation, for spotted gar (Lepisosteus oculatus) through 127 days post hatch. Fry were produced from hatchery-spawned specimens, and up to 10 individuals per week were sacrificed and their otoliths (sagitta, lapillus, and asteriscus) removed for daily age estimation. Daily age estimates for all three otolith pairs were significantly related to known age. The strongest relationships existed for measurements from the sagitta (r2 = 0.98) and the lapillus (r2 = 0.99) with asteriscus (r2 = 0.95) the lowest. All age prediction models resulted in a slope near unity, indicating that ring deposition occurred approximately daily. Initiation of ring formation varied among otolith types, with deposition beginning 3, 7, and 9 days for the sagitta, lapillus, and asteriscus, respectively. Results of this study suggested that otoliths are useful to estimate daily age of spotted gar juveniles; these data may be used to back calculate hatch dates, estimate early growth rates, and correlate with environmental factor that influence spawning in wild populations. is early life history information will be valuable in better understanding the ecology of this species. 

  10. Música del Magdalena Grande en el siglo XIX. Eulalio Meléndez

    Directory of Open Access Journals (Sweden)

    Guillermo Henríquez Torres

    2000-01-01

    Full Text Available "Los carnavales de Ciénaga son más antiguos que los de Barranquilla; de aquí salieron para allá. Antes la gente bien no bailaba; sólo el pueblo. En esta casa nació la sociedad de Ciénaga; se bailó por primera vez cuando vino Jorge Isaacs. Hicimos un baile y Eulalio Meléndez compuso El caimán. Él vino a esta casa de quince años, papá lo empleó como ayudante de farmacia y aquí aprendió música con el profesor José C. Alarcón, quien venía de Santa Marta a darle clases a mi hermana María"

  11. Determination of elements in cisadane river sediments by neutron activation analysis

    International Nuclear Information System (INIS)

    Kamarz, H.

    1997-01-01

    Determination of elements in Cisadane river sediments by neutron activation analysis has been conducted. Samples of sediments were obtained from some location along Cisadane river, i.e. Leuranji, Karanggan, Cibigo, Cisauk, Warung Mangga Pintu Air and Estuary Teluk Naga. the elements analysed were Al, Mn, Mg, V, K, Na, Fe, Cr, Co, U and Zn, and the results were compared to the SRM of sediment sample from IAEA. Generally, the results showed that the mean concentration of elements were found in Cibogo, Cisauk, Pintu Air and Muara Teluk Naga which were higher than others. Concentration factor of elements in sediments were in between of 0,02 - 3,45, this factor indicated that Cisadane river sediments have not been contaminated. CRM sediments 2704 from IAEA used as NAA Quality Control (author)

  12. Synthesis and Antimicrobial Activity of Novel 3-[1-(3-nitrophenyl ...

    African Journals Online (AJOL)

    NJD

    2007-12-14

    Dec 14, 2007 ... Boppudi Hari Babu,a M. Anil Kumar,a Ch. Mohan,a C. Naga Raju,a,* B. Venu Babu,b. Ch. Chandi ... Ch. Chandi Maruti Kumari and P. Anuradha,. 26. S. Afr. J. ..... 474 (M+• +1, 24), 473 (M+•, 17), 470 (3), 469 (13), 461 (2), 418 (2), 404 (4), 390 (12), 379 (3), 367 (8), 366 (34), 357 (4), 351 (2), 337 (2),. 330 (4) ...

  13. Structural Diversity Within the Mononuclear and Binuclear Active Sites of N-Acetyl-D-Glucosamine-6-Phosphate Deacetylase

    Energy Technology Data Exchange (ETDEWEB)

    Hall,R.; Brown, S.; Fedorov, A.; Fedorov, E.; Xu, C.; Babbitt, P.; Almo, S.; Raushel, F.

    2007-01-01

    NagA catalyzes the hydrolysis of N-acetyl-D-glucosamine-6-phosphate to D-glucosamine-6-phosphate and acetate. X-ray crystal structures of NagA from Escherichia coli were determined to establish the number and ligation scheme for the binding of zinc to the active site and to elucidate the molecular interactions between the protein and substrate. The three-dimensional structures of the apo-NagA, Zn-NagA, and the D273N mutant enzyme in the presence of a tight-binding N-methylhydroxyphosphinyl-D-glucosamine-6-phosphate inhibitor were determined. The structure of the Zn-NagA confirms that this enzyme binds a single divalent cation at the beta-position in the active site via ligation to Glu-131, His-195, and His-216. A water molecule completes the ligation shell, which is also in position to be hydrogen bonded to Asp-273. In the structure of NagA bound to the tight binding inhibitor that mimics the tetrahedral intermediate, the methyl phosphonate moiety has displaced the hydrolytic water molecule and is directly coordinated to the zinc within the active site. The side chain of Asp-273 is positioned to activate the hydrolytic water molecule via general base catalysis and to deliver this proton to the amino group upon cleavage of the amide bond of the substrate. His-143 is positioned to help polarize the carbonyl group of the substrate in conjunction with Lewis acid catalysis by the bound zinc. The inhibitor is bound in the {alpha}-configuration at the anomeric carbon through a hydrogen bonding interaction of the hydroxyl group at C-1 with the side chain of His-251. The phosphate group of the inhibitor attached to the hydroxyl at C-6 is ion paired with Arg-227 from the adjacent subunit. NagA from Thermotoga maritima was shown to require a single divalent cation for full catalytic activity.

  14. Struktur Upacara Adat Perkawinan Peranakan Tionghoa Di Teuknaga-Tangerang

    OpenAIRE

    Siregar, Feby Yoana

    2016-01-01

    The tittle of this thesis is “structure of the traditional wedding ceremony Peranakan Chinese in Teluk Naga-Tangerang”. The purpose is determine the structure of the traditional wedding ceremony of the Peranakan Chinese. Author chose this title because it is one of the unique tradition in Indonesia. This tradition is a cultural mix of Chinese, Betawi and Sundanese. Cio Tou is one of the procession is in the tradition of traditional marriage in Teluknaga Tangerang. Author chose ceremonies the...

  15. Passando per Milano. Kebba Suwareh, immigrato dal Gambia, e le conseguenze dell’illegalità

    Directory of Open Access Journals (Sweden)

    Alice Bellagamba

    2013-10-01

    Full Text Available Il centro d’accoglienza Naga-Har, l’abitazione del cugino, le carceri di San Vittore e di Bollate sono alcuni dei luoghi tra il 2005 e il 2007 attraversati da Kebba Suwareh - richiedente asilo originario del Gambia (un piccolo paese dell’Africa Occidentale affacciato sull’Oceano Atlantico e circondato su tre lati dal Senegal - mentre aspettava che la sua domanda d’asilo politico fosse valutata dalla commissione territoriale di Milano.

  16. La préservation de la forêt, source de prospérité pour les ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    17 nov. 2010 ... Lorsque nous avons commencé à examiner la connaissance qu'ils possèdent de leur milieu naturel, nous nous sommes rendu compte qu'en incitant les Nagas à renouer avec ce savoir, nous les aiderions à prendre conscience de la valeur de la biodiversité. Si vous limitez votre rôle à celui de facilitateur ...

  17. Mercury in human hair

    International Nuclear Information System (INIS)

    Kapauan, P.A.; Cruz, C.C.; Verceluz, F.P.

    1980-10-01

    The analysis of mercury (Hg) in scalp hair obtained from individuals residing in five different localities in the Philippines - Metro Manila, Naga City in Bicol, Bataan, Oriental Mindoro, and Palawan is presented. An overall mean of 1.46 ug/g of hair was obtained for all samples excluding those from Palawan and represents a baseline value.'' In terms of the mercury levels found in hair, the Honda Bay area in Palawan is, relatively, a ''contaminated area.'' (author)

  18. Affecting Reform: Explaining the Kingdom of Cambodia’s Contributions to United Nations Peacekeeping Operations in Comparative Context

    Science.gov (United States)

    2011-09-01

    commoner, Khmer-turned hero-king Sdech Kan; and as a nine-headed naga ( serpent ) with magical powers.”98 The current regime’s reversion to more...doctrine. The United States Central Intelligence Agency provides the following synopsis: its mission focus is border and internal security...Central Intelligence Agency, “Laos,” The World Factbook (August 23, 2011), Available online at: https://www.cia.gov/library/publications/the-world

  19. Faktor-Faktor yang Berhubungan dengan Kejadian Diare Pada Balita

    Directory of Open Access Journals (Sweden)

    Fera Meliyanti

    2016-12-01

    Full Text Available Diarrhea still often cause a remarkable event with the number of patients that a lot in a short time. In OKU District, diarrhea is still the fifth largest disease, one of which is Saung Naga Village to the number of visits diarrhea in infants in 2013 there were 159 (18.8%. This study aims to determine the factors associated with the incidence of diarrhea in infants. The research method using cross sectional approach. The population is all mothers with infants residing in Saung Naga Village as much as 843 mothers with a sample of 159 mothers. Sampling techniques with simple random sampling. The research location in Saung Naga Village UPTD Puskesmas Tanjung Baturaja Barat conducted in February to April 2014. Data were analyzed using Chi Square. The survey results revealed no correlation between health information with the incidence of diarrhea (p-value 0.001. There is a way of feeding correlation with the incidence of diarrhea (p-value 0.001. There is a correlation between the availability of latrines (p-value 0.001. There is a correlation between the provision of clean water to the incidence of diarrhea (p-value 0.001. Keywords: diarrhea, toddlers, health information.

  20. Dinámica fisicoquímica de las aguas de un sistema de planicies inundables tropicales

    Directory of Open Access Journals (Sweden)

    Yimmy Montoya M

    2013-01-01

    Full Text Available Se estudió el cambio de algunas variables fisicoquímicas en el agua de siete caños y siete ciénagas pertenecientes a la zona de planos de inundación de Ayapel en nueve muestreos durante el periodo 2006-2009. El valor medio de la conductividad eléctrica en la ciénaga es tres veces inferior al valor medio de las ciénagas de la región. 100 μS/cm puede considerarse como discriminante entre ciénagas con valores inferiores y los caños con valores superiores. No hubo relación entre la transparencia y la concentración de pigmentos fotosintéticos, lo que podría considerarse como indicador de un nivel de estado trófico bajo del sistema. A nivel temporal todas las formas de nutrientes evaluadas presentaron diferencias lo que indica la importancia del efecto del pulso de inundación a través del ciclo hidrológico. Con la disminución de la columna de agua en época de estiaje, se evidenció un aumento de las concentraciones de nitrógeno, las cuales se ven favorecidas por la resuspensión de material del fondo de la ciénaga. La concentración de fósforo es más sensible a la variación espacial, ya que el ciclo de este nutriente estuvo asociado a los sedimentos y a la composición del suelo de cada microcuenca. Se encontró que para una misma fase del pulso en ciclos sucesivos, se registran diferencias en la dinámica del sistema, por lo que el momento hidrológico en el que se realiza el muestreo es el factor principal en el comportamiento de las condiciones fisicoquímicas del sistema.

  1. Characterizing the interaction between the bogus yucca moth and yuccas: do bogus yucca moths impact yucca reproductive success?

    Science.gov (United States)

    Althoff, David M; Segraves, Kari A; Sparks, Jed P

    2004-07-01

    Yucca moths are most well known for their obligate pollination mutualism with yuccas, where pollinator moths provide yuccas with pollen and, in exchange, the moth larvae feed on a subset of the developing yucca seeds. The pollinators, however, comprise only two of the three genera of yucca moths. Members of the third genus, Prodoxus, are the "bogus yucca moths" and are sister to the pollinator moths. Adult Prodoxus lack the specialized mouthparts used for pollination and the larvae feed on plant tissues other than seeds. Prodoxus larvae feed within the same plants as pollinator larvae and have the potential to influence yucca reproductive success directly by drawing resources away from flowers and fruit, or indirectly by modifying the costs of the mutualism with pollinators. We examined the interaction between the scape-feeding bogus yucca moth, Prodoxus decipiens, and one of its yucca hosts, Yucca filamentosa, by comparing female reproductive success of plants with and without moth larvae. We determined reproductive success by measuring a set of common reproductive traits such as flowering characteristics, seed set, and seed germination. In addition, we also quantified the percent total nitrogen in the seeds to determine whether the presence of larvae could potentially reduce seed quality. Flowering characteristics, seed set, and seed germination were not significantly different between plants with and without bogus yucca moth larvae. In contrast, the percent total nitrogen content of seeds was significantly lower in plants with P. decipiens larvae, and nitrogen content was negatively correlated with the number of larvae feeding within the inflorescence scape. Surveys of percent total nitrogen at three time periods during the flowering and fruiting of Y. filamentosa also showed that larval feeding decreased the amount of nitrogen in fruit tissue. Taken together, the results suggest that although P. decipiens influences nitrogen distribution in Y. filamentosa, this

  2. Population genetics data help to guide the conservation of palm species with small population sizes and fragmented habitats in Madagascar

    Directory of Open Access Journals (Sweden)

    Lauren M. Gardiner

    2017-05-01

    Full Text Available Background The need to incorporate genetic data into conservation management decisions is increasingly recognised. However, many published studies represent a ‘gold standard’ of sampling, techniques, and analyses. Such rigour is often not possible with limited funding and resourcing available for developing plans for the increasing number of threatened species requiring conservation management. Two endemic palm species of the Itremo Massif in central Madagascar, Dypsis ambositrae and D. decipiens, are known to be threatened with extinction and conservation management for these species is a priority for the newly created protected area in the region. Methods The genetic diversity of these two species was studied using the relatively low-cost and rapid AFLP technique. DNA fragments generated using three primer combinations were analysed for 20 and 50 individuals of the two species, respectively, from across their ranges. Results Genetic diversity was relatively low for both species. The two sites where the highly restricted D. ambositrae grows were found to be genetically distinct (although overall heterozygosity was low. Despite having a much wider distribution and relatively large population, D. decipiens did not show clear geographical nor genetic groupings and had similarly low genetic heterozygosity to D. ambositrae. Discussion and Recommendations With so few individuals remaining in the wild and two genetically distinct subpopulations, it is recommended that both sites of D. ambositrae are conserved and that seed are collected from both for ex situ conservation and potential future reintroduction. It may be less important to focus resources on conserving or collecting ex situ material from all sites where D. decipiens is found, as the genetic diversity represented by each subpopulation is limited and increasing sampling may not protect significantly higher levels of genetic diversity. This study provides data that inform and support

  3. Natural aristolactams and aporphine alkaloids as inhibitors of CDK1/cyclin B and DYRK1A.

    Science.gov (United States)

    Marti, Guillaume; Eparvier, Véronique; Morleo, Barbara; Le Ven, Jessica; Apel, Cécile; Bodo, Bernard; Amand, Séverine; Dumontet, Vincent; Lozach, Olivier; Meijer, Laurent; Guéritte, Françoise; Litaudon, Marc

    2013-03-06

    In an effort to find potent inhibitors of the protein kinases DYRK1A and CDK1/Cyclin B, a systematic in vitro evaluation of 2,500 plant extracts from New Caledonia and French Guyana was performed. Some extracts were found to strongly inhibit the activity of these kinases. Four aristolactams and one lignan were purified from the ethyl acetate extracts of Oxandra asbeckii and Goniothalamus dumontetii, and eleven aporphine alkaloids were isolated from the alkaloid extracts of Siparuna pachyantha, S. decipiens, S. guianensis and S. poeppigii. Among these compounds, velutinam, aristolactam AIIIA and medioresinol showed submicromolar IC50 values on DYRK1A.

  4. Natural Aristolactams and Aporphine Alkaloids as Inhibitors of CDK1/Cyclin B and DYRK1A

    Directory of Open Access Journals (Sweden)

    Françoise Guéritte

    2013-03-01

    Full Text Available In an effort to find potent inhibitors of the protein kinases DYRK1A and CDK1/Cyclin B, a systematic in vitro evaluation of 2,500 plant extracts from New Caledonia and French Guyana was performed. Some extracts were found to strongly inhibit the activity of these kinases. Four aristolactams and one lignan were purified from the ethyl acetate extracts of Oxandra asbeckii and Goniothalamus dumontetii, and eleven aporphine alkaloids were isolated from the alkaloid extracts of Siparuna pachyantha, S. decipiens, S. guianensis and S. poeppigii. Among these compounds, velutinam, aristolactam AIIIA and medioresinol showed submicromolar IC50 values on DYRK1A.

  5. Three new country records from the genus  Limnephilus  Leach, 1815 ( Trichoptera : Limnephilidae ) from the Republic of Kosovo

    OpenAIRE

    Ibrahimi, Halil; Gashi, Agim; Bilalli, Astrit; Musliu, Milaim; Grapci Kotori, Linda; Zhushi Etemi, Ferdije

    2014-01-01

    Abstract New faunistic data on Trichoptera from Kosovo based on sampling carried out during the autumn of 2013 and first half of 2014 are presented.  Limnephilus bipunctatus  was found in a small stream in Kaqandoll village located in northern Kosovo and in Shtuticë village located in central Kosovo. Two male specimens of  Limnephilus decipiens   were found at Gurrat e Hasan Agës Springs and Bistrica e Lloqanit River, an alpine area in the Lloqan mountains, which belong to the Bjeshkët e Nemu...

  6. Fossil woods from the Late Cretaceous Aachen Formation.

    Science.gov (United States)

    Meijer

    2000-11-01

    Silicified fossil woods from the Late Cretaceous (Santonian) Aachen Formation of northeast Belgium, southernmost Netherlands and adjacent Germany were investigated. Gymnosperms dominate this assemblage: Taxodioxylon gypsaceum, T. cf. gypsaceum, T. cf. albertense (all Taxodiaceae), Dammaroxylon aachenense sp. nov. (Araucariaceae), Pinuxylon sp. (Pinaceae), and Scalaroxylon sp. (Cycad or Cycadeoid). Angiosperms are minor constituents: Nyssoxylon sp. (Nyssaceae?, Cornaceae?), Mastixioxylon symplocoides sp. nov. (Mastixiaceae?, Symplocaceae?), Plataninium decipiens (Platanaceae) and Paraphyllanthoxylon cf. marylandense (Anacardiaceae?, Burseraceae?, Lauraceae?).The composition of this assemblage and the anatomy of the woods indicate a seasonal and humid warm-temperate to subtropical climate.

  7. Contracaecum osculatum and other anisakid nematodes in grey seals and cod in the Baltic Sea

    DEFF Research Database (Denmark)

    Zuo, S; Kania, P W; Mehrdana, F

    2018-01-01

    anisakid nematodes Pseudoterranova decipiens and Anisakis simplex are also found in both seals and cod in the Baltic Sea, but at much lower rates. The Baltic grey seal population was left at a critically low level (comprising a few hundred individuals) during the latter part of the 20th century, but since......Populations of grey seals (Halichoerus grypus), sprats (Sprattus sprattus) and cod (Gadus morhua) in the Baltic Sea are relatively stationary. The present work, applying classical and molecular helminthological techniques, documents that seals and cod also share a common parasite, the anisakid...

  8. MOLECULAR IDENTIFICATION OF Pseudoterranova azarasi LARVAE IN COD (Gadus sp.) SOLD FOR HUMAN CONSUMPTION IN BRAZIL

    Science.gov (United States)

    MARIGO, Juliana; TANIWAKI, Sueli Akemi; PINTO, Pedro Luiz Silva; SOARES, Rodrigo Martins; CATÃO-DIAS, José Luiz

    2015-01-01

    Anisakiasis and Pseudoterranovosis are human diseases caused by the ingestion of live Anisakidae larvae in raw, undercooked or lightly marinated fish. Larvae were collected from one salted cod sold for human consumption in a Sao Paulo market in 2013. One section of one brownish larva was used for molecular analyses. The partial COX2 gene sequence from the larva had a nucleotide identity of 99.8 % with Pseudoterranova azarasi, which belongs to the Pseudoterranova decipiens species complex. The risk of allergy when consuming dead larvae in salted fish is not well known and should be considered. PMID:27049712

  9. ¿Existen variaciones interanuales en el crecimiento larval de anchoíta bonaerense (Engraulis anchoita)?

    OpenAIRE

    Barretto, A.C.; Chandler, D.E.; Gómez, M.I.

    2005-01-01

    Se determinaron las tasas de crecimiento de larvas de la anchoíta argentina (Engraulis anchoíta) provenientes de la plataforma bonaerense, contando y midiendo incrementos diarios en sus otolitos sagitta. Las larvas se capturaron en diferentes años y durante diferentes épocas (otoño de 1999; invierno de 2000 y primavera de 2002, 2003 y 2004)a los fines de analizar diferencias interanuales en el crecimiento. Se observó que tanto el crecimiento de las larvas como el del otolito estaban acoplados...

  10. The laser system for calibration and monotoring of the Opal jet chamber

    International Nuclear Information System (INIS)

    Biebel, O.; Boden, B.; Bug, S.; Eyring, A.; Fischer, H.M.; Geich-Gimbel, C.; Gross, S.; Knop, G.; Levegruen, S.; Maringer, G.; Mauer, E.; Maur, U.; Nellen, B.; Neumann, H.; Rollnik, A.; Schreiber, S.; Simon, A.; Thiebes, J.; Wolf, B.; Wuensch, B.; Boerner, H.; Breuker, H.; Hagemann, J.; Hauschild, M.; Heuer, R.D.; Karner, K.; Linser, G.; Runolfsson, O.; Seidl, W.; Voillat, D.; Wicht, P.; Schmitt, H. von der; Wagner, A.

    1992-01-01

    In this report we describe the construction and performance of the laser system which was used in Summer 1989 for the initial calibration of the OPAL jet chamber after installation on the LEP beam axis and which has served as a monitoring tool since then. Two Nd:YAG lasers are used to generate 48 high precision double beams which enter the chamber at fixed positions. The main features of the roughly 450 optical components are described and the beam alignment procedures are explained. Results are given for jet chamber calibration constants such as drift velocity, Lorentz angle, and residual sagittas. (orig.)

  11. OTOLITH MASS ASYMMETRY IN CARANGOIDES CAERULEPINNATUS (RÜPPELL, 1830 (FAMILY: CARANGIDAE COLLECTED FROM THE SEA OF OMAN

    Directory of Open Access Journals (Sweden)

    Laith Jawad

    2013-04-01

    Full Text Available The sagittae mass asymmetry was studied in the teleost Carangoides caeruleopinnatus. The value of the asymmetry was calculated as the difference between the mass of the right and left paired otoliths, divided by average otolith mass. The results show that the absolute value of X in C. caeruleopinnatus does not depend on fish length and otolith growth rate, as it does in other symmetrical fish species. However, the absolute value of otolith mass difference increases with the fish length. The value of x falls between -0.2 and +0.2.

  12. Sturgeon and paddlefish (Acipenseridae) sagittal otoliths are composed of the calcium carbonate polymorphs vaterite and calcite.

    Science.gov (United States)

    Pracheil, B M; Chakoumakos, B C; Feygenson, M; Whitledge, G W; Koenigs, R P; Bruch, R M

    2017-02-01

    This study sought to resolve whether sturgeon (Acipenseridae) sagittae (otoliths) contain a non-vaterite fraction and to quantify how large a non-vaterite fraction is using neutron diffraction analysis. This study found that all otoliths examined had a calcite fraction that ranged from 18 ± 6 to 36 ± 3% by mass. This calcite fraction is most probably due to biological variation during otolith formation rather than an artefact of polymorph transformation during preparation. © 2016 The Fisheries Society of the British Isles.

  13. The facility for ATLAS resistive plate chambers assembly

    CERN Document Server

    Perrino, R; Gerardi, R; Grancagnolo, F; Miccoli, A

    2003-01-01

    The dedicated facility built for the assembling of the nearly 1000 RPC units of the ATLAS mu-spectrometer is described in detail. The necessity of keeping the gravitational sagitta below 10 mm for the 5- m-long RPC units has driven the careful design of the extruded Al lateral profiles and suspension end-plates. A special assembly table allows to maintain the mechanical tolerances of each unit well below plus or minus 1 mm in all dimensions. Both gas gaps inside each unit are kept at a constant pressure of 10**3 Pa over the whole surface, in order to ensure the uniformity of the gap.

  14. Estimates of dispersive effects in a bent NLC Main Linac

    Energy Technology Data Exchange (ETDEWEB)

    Michael Syphers and Leo Michelotti

    2000-10-31

    An alternative being considered for the Next Linear Collider (NLC) is not to tunnel in a straight line but to bend the Main Linac into an arc so as to follow a gravitational equipotential. The authors begin here an examination of the effects that this would have on vertical dispersion, with its attendant consequences on synchrotron radiation and emittance growth by looking at two scenarios: a gentle continuous bending of the beam to follow an equipotential surface, and an introduction of sharp bends at a few sites in the linac so as to reduce the maximum sagitta produced.

  15. Variaciones estacionales en el crecimiento de larvas de anchoíta (Engraulis anchoita) en la zona costera argentina

    OpenAIRE

    Leonarduzzi, Ezequiel; Brown, Daniel R.; Sánchez, Ramiro P.

    2010-01-01

    Se determinó la edad y el crecimiento de larvas de anchoíta (Engraulis anchoita) mediante el conteo y medición de los incrementos diarios de los otolitos sagitta. Las larvas fueron capturadas en la Plataforma Costera Argentina durante el año 2000 por medio de una red Bongo. Se analizaron un total de 251 larvas entre 3.5 a 12.2 mm. Las relaciones talla-edad y talla -radio del otolito se representaron mediante modelos lineales para cada estación del año (primavera-verano-otoño). La mayor tasa d...

  16. A MORPHOLOGICAL AND MOLECULAR STUDY OF AUSTRAL SARGASSUM (FUCALES, PHAEOPHYCEAE) SUPPORTS THE RECOGNITION OF PHYLLOTRICHA AT GENUS LEVEL, WITH FURTHER ADDITIONS TO THE GENUS SARGASSOPSIS(1).

    Science.gov (United States)

    Dixon, Rainbo R M; Huisman, John M; Buchanan, Joe; Gurgel, Carlos Frederico D; Spencer, Peter

    2012-10-01

    Sargassum subgenus Phyllotricha currently includes seven species restricted to Australian and New Zealand coasts. A recent study of Cystoseira and other Sargassaceae genera based on mitochondrial 23S DNA and chloroplast-encoded psbA sequences resulted in the most widely distributed species of subgenus Phyllotricha, Sargassum decurrens, being transferred to the reinstated monospecific Sargassopsis Trevisan. The fate of the residual six Phyllotricha species, however, was not considered. The present study examines these Phyllotricha species, alongside other Sargassum subgenera, Sargassopsis, Sirophysalis trinodis (formerly Cystoseira trinodis) and the New Zealand endemic Carpophyllum Greville, using morphological evidence and the molecular phylogenetic markers cox3, ITS-2 and the rbcL-S spacer. Our results suggest both the genus Sargassum and Sargassum subgenus Phyllotricha are polyphyletic as currently circumscribed. Four S. subgen. Phyllotricha species, i.e. S. sonderi, S. decipiens, S. varians and S. verruculosum, form a monophyletic group sister to the genus Carpophyllum, and S. peronii is genetically identical to S. decurrens with regard to all three loci. We propose the resurrection of the genus Phyllotricha Areschoug, with type species Phyllotricha sonderi, and include the new combinations Phyllotricha decipiens, Phyllotricha varians and Phyllotricha verruculosum. Sargassum peronii, S. heteromorphum and S. kendrickii are transferred to Sargassopsis and Sargassum peronii is considered a synonym of Sargassopsis decurrens. © 2012 Phycological Society of America.

  17. Arbuscular Mycorrhizal Colonization Enhanced Early Growth of Mallotus paniculatus and Albizia saman under Nursery Conditions in East Kalimantan, Indonesia

    Directory of Open Access Journals (Sweden)

    Dewi Wulandari

    2014-01-01

    Full Text Available Forest over logging, forest fire, forest conversion, and opencast mining have promoted deforestation in Indonesia, and reforestation is needed immediately. However, reforestation is limited by low seedling quality and production, and slow seedling growth in nurseries. Native tropical tree and fast-growing species, Mallotus paniculatus and Albizia saman, are potential to promote the first rotation of reforestation. Arbuscular mycorrhizal (AM fungi are known to promote nutrient uptake and plant growth. We examined the effects of two native AM fungi, Gigaspora decipiens and Glomus clarum, on the growth of M. paniculatus and A. saman seedlings under nursery conditions. At harvest, after six months, we determined AM colonization, shoot dry weight, and shoot N and P concentration. Approximately 90% and 50% of M. paniculatus and A. saman roots, respectively, were colonized by AM fungi, without any difference between the inoculation treatments. G. decipiens and G. clarum increased shoot height, leaf number, shoot dry weight, and shoot N and P uptake of both species. A positive correlation was observed between N and P uptake and shoot dry weight. These results suggest that AM fungi are effective in accelerating nutrient uptake and plant growth, which will, in turn, promote reforestation and sustainable forest timber production.

  18. Pseudoterranova cattani sp. nov. (Ascaridoidea: Anisakidae, a parasite of the South American sea lion Otaria byronia De Blainville from Chile Pseudoterranova cattani sp. nov. (Ascaridoidea: Anisakidae, un parásito del lobo marino común Otaria byronia De Blainville en Chile

    Directory of Open Access Journals (Sweden)

    MARIO GEORGE-NASCIMENTO

    2000-03-01

    Full Text Available The parasitic nematode Pseudoterranova cattani sp. nov. is described from the stomach of the South American sea lion Otaria byronia De Blainville, sampled along the coastline off central-south Chile, between 1980 and 1997. The adult and larvae of this species have been previously reported in the Southeastern Pacific Ocean as Phocanema decipiens Myers. Major differences with species from the North Atlantic and Northwest Pacific are based on the body size, number, distance and size of caudal pillaeSe describe al nemátodo parásito Pseudoterranova cattani sp. nov. encontrado en el estómago del lobo marino común Otaria byronia De Blainville, en muestras tomadas entre 1980 y 1997, a lo largo de la costa del centro-sur de Chile. Las larvas y adultos de esta especie han sido registrados en el océano Pacífico sudoriental como Phocanema decipiens Myers. Las principales diferencias con las especies del Atlántico norte y del Pacífico noroccidental se basan en el tamaño corporal y en el número, tamaño, distancia y proporciones de las papilas caudales

  19. Identificación de stocks pesqueros de la corvina de río (Plagioscion ternetzi de los ríos Paraguay y Paraná, mediante el análisis morfométrico de sus otolitos

    Directory of Open Access Journals (Sweden)

    Esteban Avigliano

    2015-09-01

    Full Text Available La identificación de stocks pesqueros es un requisito básico para el manejo y la gestión de la pesca. El objetivo de este trabajo fue describir por primera vez los otolitos de la corvina de Río P. ternetzi y evaluar la existencia de diferentes stocks pesqueros entre dos áreas de la Cuenca del Plata, cuenca baja del Río Paraguay y el Río Paraná medio. Con este fin, cinco índices morfométricos aplicados sobre los otolitos sagittae (rectangularidad, circularidad AO/LO, SS/SO y PS/PO fueron comparados entre los sitios de estudio. Los otolitos sagittae son semicirculares y presentan bordes lisos. El sulcus acusticus es de tipo heterosulcoide y curvo, con abertura pseudoostio-caudal. Se observaron diferencias significativas para circularidad, rectangularidad, SS/SO y PS/PO (t- test, P 69%. Los resultados obtenidos sugieren que las poblaciones de esta especie de los ríos Paraguay y Paraná estarían parcialmente separadas, aunque mantendrían flujo de individuos entre las mismas.

  20. Corneal topographer based on the Hartmann test.

    Science.gov (United States)

    Mejía, Yobani; Galeano, Janneth C

    2009-04-01

    The purpose of this article is to show the performance of a topographer based on the Hartmann test for convex surfaces of F/# approximately 1. This topographer, called "Hartmann Test topographer (HT topographer)," is a prototype developed in the Physics Department of the Universidad Nacional de Colombia. From the Hartmann pattern generated by the surface under test, and by the Fourier analysis and the optical aberration theory we obtain the sagitta (elevation map) of the surface. Then, taking the first and the second derivatives of the sagitta in the radial direction we obtain the meridional curvature map. The method is illustrated with an example. To check the performance of the HT topographer a toric surface, a revolution aspherical surface, and two human corneas were measured. Our results are compared with those obtained with a Placido ring topographer (Tomey TMS-4 videokeratoscope), and we show that our curvature maps are similar to those obtained with the Placido ring topographer. The HT topographer is able to reconstruct the corneal topography potentially eradicating the skew ray problem, therefore, corneal defects can be visualized more. The results are presented by elevation and meridional curvature maps.

  1. Hierarchical structure of the otolith of adult wild carp

    Energy Technology Data Exchange (ETDEWEB)

    Li Zhuo; Gao Yonghua [State key laboratory of new ceramics and fine processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084 (China); Feng Qingling, E-mail: biomater@mail.tsinghua.edu.cn [State key laboratory of new ceramics and fine processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084 (China)

    2009-04-30

    The otolith of adult wild carp contains a pair of asterisci, a pair of lappilli and a pair of sagittae. Current research works are mainly restricted to the field of the daily ring structure. The purpose of this work is to explore the structural characteristics of carp's otolith in terms of hierarchy from nanometer to millimeter scale by transmission election microscope (TEM) and scanning electron microscope (SEM). Based on the observation, carp's lapillus is composed of ordered aragonite crystals. Seven hierarchical levels of the microstructure were proposed and described with the scheme representing a complete organization in detail. SEM studies show not only the clear daily growth increment, but also the morphology within the single daily increment. The domain structure of crystal orientation in otolith was observed for the first time. Furthermore, TEM investigation displays that the lapillus is composed of aragonite crystals with nanometer scale. Four hierarchical levels of the microstructure of the sagitta are also proposed. The asteriscus which is composed of nanometer scale vaterite crystals is considered to have a uniform structure.

  2. Hierarchical structure of the otolith of adult wild carp

    International Nuclear Information System (INIS)

    Li Zhuo; Gao Yonghua; Feng Qingling

    2009-01-01

    The otolith of adult wild carp contains a pair of asterisci, a pair of lappilli and a pair of sagittae. Current research works are mainly restricted to the field of the daily ring structure. The purpose of this work is to explore the structural characteristics of carp's otolith in terms of hierarchy from nanometer to millimeter scale by transmission election microscope (TEM) and scanning electron microscope (SEM). Based on the observation, carp's lapillus is composed of ordered aragonite crystals. Seven hierarchical levels of the microstructure were proposed and described with the scheme representing a complete organization in detail. SEM studies show not only the clear daily growth increment, but also the morphology within the single daily increment. The domain structure of crystal orientation in otolith was observed for the first time. Furthermore, TEM investigation displays that the lapillus is composed of aragonite crystals with nanometer scale. Four hierarchical levels of the microstructure of the sagitta are also proposed. The asteriscus which is composed of nanometer scale vaterite crystals is considered to have a uniform structure.

  3. Heterospecific aggression bias towards a rarer colour morph.

    Science.gov (United States)

    Lehtonen, Topi K; Sowersby, Will; Wong, Bob B M

    2015-09-22

    Colour polymorphisms are a striking example of phenotypic diversity, yet the sources of selection that allow different morphs to persist within populations remain poorly understood. In particular, despite the importance of aggression in mediating social dominance, few studies have considered how heterospecific aggression might contribute to the maintenance or divergence of different colour morphs. To redress this gap, we carried out a field-based study in a Nicaraguan crater lake to investigate patterns of heterospecific aggression directed by the cichlid fish, Hypsophrys nicaraguensis, towards colour polymorphic cichlids in the genus Amphilophus. We found that H. nicaraguensis was the most frequent territorial neighbour of the colour polymorphic A. sagittae. Furthermore, when manipulating territorial intrusions using models, H. nicaraguensis were more aggressive towards the gold than dark colour morph of the sympatric Amphilophus species, including A. sagittae. Such a pattern of heterospecific aggression should be costly to the gold colour morph, potentially accounting for its lower than expected frequency and, more generally, highlighting the importance of considering heterospecific aggression in the context of morph frequencies and coexistence in the wild. © 2015 The Author(s).

  4. Disease: H00422 [KEGG MEDICUS

    Lifescience Database Archive (English)

    Full Text Available ria (AGU) [DS:H00145]; Fucosidosis [DS:H00141]; Schindler/ Kanzaki disease [DS:H00146] Glycoproteinoses is a...cosidase [HSA:2517] [KO:K01206] (Schindler/ Kanzaki) NAGA; alpha-N-acetylgalactosaminidase [HSA:4668] [KO:K0...PD:C00270] (alpha, beta-Mannosidosis, AGU, Fucosidosis, Schindler/ Kanzaki) Urine oligosaccharides, Vacuolat...g loss and mental retardation. (Fucosidosis) Type 1: a severe form. Type2: a mild form. (Schindler/ Kanzaki) Type1 (Schindle...lpha-N-acetylgalactosaminidase deficiency (Schindler/Kanzaki disease). ... JOURNAL ... J Hum Genet 49:1-8 (2004) DOI:10.1007/s10038-003-0098-z ...

  5. Food Habits and Food Taboos of the Marams of Manipur, India

    OpenAIRE

    G. Meithuanlungpou; Kh. N. Singh

    2015-01-01

    The Marams are one of the sub-tribe of Naga tribes inhabiting at Senapati district of Manipur of northeast India. Marams have distinct food habit and food choices. The dietary habits of Maram are quite simple and mostly depend on the local sources of variety of vegetables and meats and other non vegetarian food items. Rice is the staple food and rice beer prepared from the locally available rice species is the favourite drink of the Marams, Their daily food intake normally includes rice, meat...

  6. Reference: 576 [Arabidopsis Phenome Database[Archive

    Lifescience Database Archive (English)

    Full Text Available shi et al. 2007 Jun. Plant Physiol. 144(2):1039-51. In the tetrapyrrole biosynthetic pathway, isoforms of gl... the induction of these genes in photosynthetic tissues. The physiological functions of AtHEMA2 and AtFC1 we...ynthetic enzymes, AtHEMA2 and AtFC1, under stress conditions and their physiological functions in Arabidopsi...s. 2 1039-51 17416636 2007 Jun Plant physiology Aono Mitsuko|Kikuta Akihiro|Koide Masumi|Masuda Tatsuru|Naga

  7. Relación entre la planificación urbana y fenómeno de variabilidad climática en la costa caribe colombiana: estudio de caso: fenómeno de la niña en Cartagena 2001-2011

    OpenAIRE

    Covelli Garrido, Cristina Isabel

    2015-01-01

    El presente trabajo de grado tiene como fin evidenciar las relaciones entre los instrumentos de planificación y los impactos de fenómenos de variabilidad climática en territorios vulnerables. Se analizan los factores de vulnerabilidad, amenaza y riesgo en la Ciénaga de la Virgen en Cartagena así como algunas de las decisiones de planificación tomadas durante el periodo estudiado (2001-2011) para finalmente identificar aquellos retos que deben ser tenidos en cuenta por futuros ejercicios de pl...

  8. Qu'est-ce qui détermine l'accès aux TIC aux Philippines ? | CRDI ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    8 févr. 2011 ... Quand le mauvais temps frappe, dans certaines régions des Philippines, les étudiants des universités vérifient la messagerie textuelle de leurs téléphones cellulaires pour voir si les cours ont été annulés ou non. À Naga, les résidents qui veulent un permis de bâtir, une carte de bibliothèque, voire un prêt, ...

  9. Database Description - DMPD | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available List Contact us DMPD Database Description General information of database Database name DMPD Alternative nam...e Dynamic Macrophage Pathway CSML Database DOI 10.18908/lsdba.nbdc00558-000 Creator Creator Name: Masao Naga...ty of Tokyo 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639 Tel: +81-3-5449-5615 FAX: +83-3-5449-5442 E-mail: Database...606 Taxonomy Name: Mammalia Taxonomy ID: 40674 Database description DMPD collects... pathway models of transcriptional regulation and signal transduction in CSML format for dymamic simulation base

  10. Multipleexo-glycosidases in human serum as detected with the substrate DNP-α-GalNAc. II. Three α-N-acetylgalactosaminidase-like activities in the pH 5 to 8 region.

    Science.gov (United States)

    Albracht, Simon P J; van Pelt, Johannes

    2017-12-01

    With the substrate DNP-α-GalNAc (2,4-dinitrophenyl- N -acetyl-α-d-galactosaminide) three α- N -acetylgalactosaminidase-like activities could be distinguished in serum, in addition to the classical lysosomal enzyme (Naga, EC 3.2.1.49, pH optimum at 4). Two activities had optima in the pH 5 to 6 region and one peaked around pH 8. Like the Naga activity at pH 4, the activity at pH 8 was detectable under standard assay conditions. However, the two activities in the pH 5 to 6 range were not readily apparent in such assays. They could be unmasked as separate activities only when low serum concentrations were used. Addition of 1% saturated ammonium sulphate to the assay medium stimulated these activities. All activities in the pH 5 to 8 range decreased with increasing serum concentration in the assay, suggesting the presence of endogenous inhibitors. The activities between pH 5 and 6 might be similar to an activity described in 1996, which was considerably elevated in serum of patients with great variety of cancers (N. Yamamoto, V.R. Naraparaju, and S.O. Asbell (1996). Deglycosylation of serum vitamin D 3 -binding protein leads to immunosuppression in cancer patients. Cancer Res. 56, 2827-2811).

  11. MAMÍFEROS PEQUEÑOS EN LA DIETA DE LA LECHUZA TYTO ALBA (STRIGIFORMES: TYTONIDAE EN DOS LOCALIDADES DEL OCCIDENTE DE ECUADOR, CON AMPLIACIÓN DISTRIBUCIONAL DE ICHTHYOMYS HYDROBATES (RODENTIA: CRICETIDAE

    Directory of Open Access Journals (Sweden)

    JORGE BRITO M.

    2015-01-01

    Full Text Available En el presente estudio a partir de 107 egagrópilas de la lechuza, determinamos el consumo de 300 presas agrupadas en 21 especies, las egagrópilas fueron colectadas en dos localidades de diferente ambiente Los Santiagos y La Ciénaga, en las provincias de Chimborazo y Manabí, al occidente de Ecuador. Nuestros análisis revelaron una dieta compuesta mayoritariamente de mamíferos pequeños, sobre todo roedores, quienes constituyeron el 80%. Entre las presas más abundantes se encontró a Oligoryzomys sp. que representó el 38.7% de la dieta en las muestras de Los Santiagos y Sigmodon peruanus 33.6% en La Ciénaga, siendo el 22,5% y 41% respectivamente de la biomasa total consumida para cada sitio. La rata cangrejera Ichthyomys hydrobates es reportada por primera vez en la dieta de la lechuza y también en la localidad de Los Santiagos, ampliando el rango distribucional de este roedor para el centro-sur al occidente de Ecuador en aproximadamente 200 km.

  12. Genetic variation observed at three tetrameric short tandem repeat loci HumTHO1, TPOX, and CSF1PO--in five ethnic population groups of northeastern India.

    Science.gov (United States)

    Ranjan, D; Kashyap, V K

    2001-01-01

    This paper portrays the genetic variation observed at three tetrameric short tandem repeat (STR) loci HumTHO1, TPOX, and CSF1PO in five ethnic population groups from northeastern India. The study also specifies the suitability of use of these markers for forensic testing. The populations studied included three tribal groups (Kuki, Naga and Hmar), one Mongoloid caste group (Meitei), and a religious caste group (Manipuri Muslims). The loci were highly polymorphic in the populations, and all loci met Hardy-Weinberg expectations. No evidence for association of alleles among the loci was detected. The probability of match for the three loci of the most frequent genotype in the five population groups ranged between 2.6 x 10(-4) and 6.6 x 10(-5). The average heterozygosity among the population groups was approximately 70% with the overall extent of gene differentiation among the five groups being high (Gst = 0.046). Genetic affinity among the populations reveal very close association between the Kuki, Hmar, Naga, and Meitei. The Manipuri Muslims, despite being found in the same region, have had no admixture with these populations and maintain a substantial distance with the other groups. The genetic polymorphism data suggest that the studied systems can be used for human identity testing to estimate the frequency of a multiple locus STR DNA profile in population groups of northeastern India.

  13. Apple ring rot-responsive putative microRNAs revealed by high-throughput sequencing in Malus × domestica Borkh.

    Science.gov (United States)

    Yu, Xin-Yi; Du, Bei-Bei; Gao, Zhi-Hong; Zhang, Shi-Jie; Tu, Xu-Tong; Chen, Xiao-Yun; Zhang, Zhen; Qu, Shen-Chun

    2014-08-01

    MicroRNAs (miRNAs) are small non-coding RNAs, which silence target mRNA via cleavage or translational inhibition to function in regulating gene expression. MiRNAs act as important regulators of plant development and stress response. For understanding the role of miRNAs responsive to apple ring rot stress, we identified disease-responsive miRNAs using high-throughput sequencing in Malus × domestica Borkh.. Four small RNA libraries were constructed from two control strains in M. domestica, crabapple (CKHu) and Fuji Naga-fu No. 6 (CKFu), and two disease stress strains, crabapple (DSHu) and Fuji Naga-fu No. 6 (DSFu). A total of 59 miRNA families were identified and five miRNAs might be responsive to apple ring rot infection and validated via qRT-PCR. Furthermore, we predicted 76 target genes which were regulated by conserved miRNAs potentially. Our study demonstrated that miRNAs was responsive to apple ring rot infection and may have important implications on apple disease resistance.

  14. Reading Terror in Literature: Exploring Insurgency in Nagaland through Temsula Ao’s These Hills Called Home: Stories from a War Zone

    Directory of Open Access Journals (Sweden)

    I Watitula Longkumer

    2014-07-01

    Full Text Available For some places, literature can hardly go beyond the bondage of terror. North East India, which has suffered since the independence on accounts of sovereignty, language, and ethnic influx, and seen  unimaginable levels of violence and atrocity perpetrated both by the military and the insurgent bodies, finds little beyond terror when its literary writers try to explore its history and culture. This paper would like to study Temsula Ao’ collection of stories in context of the contentious history of Nagaland. Set in the 60s and 70s, when the Naga claims of separate territory and sovereignty were widespread in the hill regions, Ao’s stories explore the issues such as military violence, stolen adults, unmindful destruction of innocent lives and private and public property, etc that have tried to strangle life in Nagaland. In course, it also seeks to define and complicate the term insurgency. Many of Ao’s stories are woven around simple wit and humour which seem to bind the multi-ethnic Naga communities together. I argue that this might be one way of moving beyond the bondage of terror and foster a communal memory that has shared and survived those moments and remember them with the community’s everyday way of living life. Keywords: Temsula Ao, North-East,Insurgency, Terror, Nation.

  15. Polysaccharides of Aloe vera induce MMP-3 and TIMP-2 gene expression during the skin wound repair of rat.

    Science.gov (United States)

    Tabandeh, Mohammad Reza; Oryan, Ahmad; Mohammadalipour, Adel

    2014-04-01

    Polysaccharides are the main macromolecules of Aloe vera gel but no data about their effect on extracellular matrix (ECM) elements are available. Here, mannose rich Aloe vera polysaccharides (AVP) with molecular weight between 50 and 250 kDa were isolated and characterized. Open cutaneous wounds on the back of 45 rats (control and treated) were daily treated with 25mg (n=15) and 50 mg (n=15) AVP for 30 days. The levels of MMP-3 and TIMP-2 gene expression were analyzed using real time PCR. The levels of n-acetyl glucosamine (NAGA), n-acetyl galactosamine (NAGLA) and collagen contents were also measured using standard biochemical methods. Faster wound closure was observed at day 15 post wounding in AVP treated animals in comparison with untreated group. At day 10 post wounding, AVP inhibited MMP-3 gene expression, while afterwards MMP-3 gene expression was upregulated. AVP enhanced TIMP-2 gene expression, collagen, NAGLA and NAGA synthesis in relation to untreated wounds. Our results suggest that AVP has positive effects on the regulation of ECM factor synthesis, which open up new perspectives for the wound repair activity of Aloe vera polysaccharide at molecular level. Copyright © 2014 Elsevier B.V. All rights reserved.

  16. APORTE AL CONOCIMIENTO DE LOS MACROINVERTEBRADOS ASOCIADOS A LAS RAICES DEL MANGLE (Rizophora mangle EN LA CIENAGA LA BOQUILLA, MUNICIPIO DE SAN ONOFRE, SUCRE.

    Directory of Open Access Journals (Sweden)

    QUICENO CUARTAS PAULA ANDREA

    2010-05-01

    Full Text Available Con el fin de establecer la estructura de la comunidad de macroinvertebrados asociados a las raíces del mangle rojo Rizophora mangle en la ciénaga La Boquilla, se muestreó cuatro veces en cinco estaciones entre febrero y agosto de 1999. En cada estación, se retiraron de dos a cinco raíces y cuantificó el número y la cobertura de los macroinvertebrados asociados. En general, en la ciénaga La Boquilla se mantienen temperaturas altas con ligeras fluctuaciones a través del tiempo. En forma similar, la salinidad permaneció en niveles superiores a 30 UPS con sólo ligeras fluctuaciones. En total se capturaron 33 morfoespecies, la mayoría de origen marino y con un marcado carácter estenohalino. Entre las especies encontradas, los bivalvos presentaron las mayores áreas de cubrimiento y abundancia, en general, la composición de la comunidad asociada a las raíces no varió significativamente en el tiempo y en el espacio. El número de especies y la diversidad fueron bajos en comparación con otros ambientes lagunares del Caribe colombiano.

  17. Efficacy of obesity indices and age in predicting diabetes: study on a transitional tribe of Northeast India.

    Science.gov (United States)

    Mungreiphy, N K; Kapoor, Satwanti

    2014-01-01

    To evaluate the association between blood sugar level and obesity, and the interplay of socioeconomic change, and to investigate the efficacy of different obesity indices and age in predicting diabetes. Cross-sectional study was carried out among 603 adult Tangkhul Nagas of NE India. Anthropometric measurements, random blood sugar level, general and regional obesity indices were evaluated along with their information on socioeconomic and lifestyle factors. Socioeconomic change observed among the Tangkhuls influence the rise of overweight/obesity and blood sugar level. Obesity and elevated blood sugar level were highly prevalent and interrelated. Diabetes and obesity were also found to be associated with age. Central obesity indices were highly associated with blood sugar level. Odds ratio showed the likelihood of developing prediabetes/diabetes among centrally obese participants. Correlation between blood sugar level, age and obesity indices showed that waist hip ratio had the highest correlation with blood sugar. It implies the higher reliability of central obesity than general obesity or age in determining blood sugar level. The transition of the Tangkhul Naga tribe in terms of socioeconomic and lifestyle factors contributes to the escalating prevalence of overweight/obesity and diabetes. The rising epidemic is not restricted to highly urbanized societies but now has penetrated even to traditional and transitional tribes owing to their changing lifestyle. Different facets of the complex associations between obesity, age, diabetes and socioeconomic change were observed. Central obesity indicator, waist hip ratio emerge as the paramount predictors of prediabetes/diabetes.

  18. Borreria sect. Pseudodiodia (Rubiaceae taxonomic and palynological contributions

    Directory of Open Access Journals (Sweden)

    Elsa L. Cabral

    2006-01-01

    Full Text Available Taxonomy and palynology of the genus Borreria G. Mey. section Pseudodiodia Hassl. are updated. Four species are added to the section, three of them are described and illustrated, raising to ten the number of taxa included in it. Two of them live in Galapagos (B. suberecta Hook. f. and B. dispersa Hook. f. and the other (B. decipiens K. Schum. and B. tocantinsiana E. L. Cabral & Bacigalupo grow in Brazil. Pollen grains of these species were examined with light and scanning electron microscopy. The continental species present the typical pollen characteristics of Pseudodiodia (long colpi and tectatespinulate exine, whereas pollen produced by species living in Galapagos have variations in the exine.

  19. REVISION OF DISSOCHAETA (MELASTOMATACEAE IN JAVA, INDONESIA

    Directory of Open Access Journals (Sweden)

    ABDULROKHMAN KARTONEGORO

    2010-11-01

    Full Text Available KARTONEGORO, A. & VELDKAMP, J. F. 2010. A revision of Dissochaeta (Melastomataceae in Java. Reinwardtia13(2: 125–145.  There are 12 species of Dissochaeta (Melastomataceae in Java, Indonesia: D. bakhuizenii, D. bracteata,D. decipiens, D. fallax, D. gracilis, D. inappendiculata, D. intermedia, D. leprosa, D. monticola, D. reticulata, D.sagittata and D. vacillans. Diplectria and Macrolenes are regarded as separate genera and species traditionally classifiedwithin the latter have not been included. Dissochaeta leprosa, D. reticulata, and D. sagittata are reinstated as species.Dissochaeta gracilis is the most common species of Dissochaeta and D. bracteata is the rarest one. There are noendemics for the island. Each taxon is provided with literature references, synonymy, morphological descriptions, distribution,ecological habitat, collector’s notes, and notes. An identification key and a list of collections seen are included.

  20. Cyclopidae (Crustacea, Copepoda) from the upper Paraná River floodplain, Brazil.

    Science.gov (United States)

    Lansac-Tôha, F A; Velho, L F M; Higuti, J; Takahashi, E M

    2002-02-01

    Cyclopid copepods from samples of fauna associated with aquatic macrophytes and plancton obtained in lotic and lentic environments were obtained from the upper Paraná River floodplain (in the states of Paraná and Mato Grosso do Sul, Brazil). Macrophytes were collected in homogeneous stands and washed. Plankton samples, taken from the water column surface and bottom, were obtained using a motor pump, with a 70 microns mesh plankton net for filtration. Twelve taxa of Cyclopidae were identified. Among them, Macrocyclops albidus albidus, Paracyclops chiltoni, Ectocyclops rubescens, Homocyclops ater, Eucyclops solitarius, Mesocyclops longisetus curvatus, Mesocyclops ogunnus, and Microcyclops finitimus were new finds for this floodplain. Eight species were recorded exclusively in aquatic macrophyte samples. Among these species, M. albidus albidus and M. finitimus presented greatest abundances. Only four species were recorded in plankton samples, and Thermocyclops minutus and Thermocyclops decipiens are limited to this type of habitat. Among these four species, T. minutus is the most abundant, especially in lentic habitats.

  1. ARBUSCULAR MYCORRHIZAL FUNGI INCREASED EARLY GROWTH OF GAHARU WOOD OF Aquilaria malaccencsis and A. crasna UNDER GREENHOUSE CONDITIONS

    Directory of Open Access Journals (Sweden)

    Maman Turjaman

    2006-07-01

    Full Text Available Gaharu wood stand has an important source of profits to the forest community in South and Southeast Asia tropical forest countries, but Aquilaria species have reduced in number and turn out to be endangered due to overexploitation.   Today,   the planting stocks of   Aquilaria species are not sufficient to sustain the yield of gaharu wood and promote forest conservation.  The objective of this study was to determine   the effect of   five arbuscular mycorrhizal (AM fungi: Entrophospora sp., Gigaspora decipiens, Glomus clarum, Glomus sp. ZEA, and Glomus sp. ACA, on the early growth of  Aquilaria malaccensis and A. crasna under greenhouse conditions. The seedlings of  Aquilaria spp. were inoculated with Entrophospora sp., Gi. decipiens, Glomus clarum, Glomus sp. ZEA, Glomus sp. ACA and uninoculated (control under greenhouse conditions. Then, percentage AM colonization, plant growth, survival rate and nitrogen (N and phosphorus (P content and mycorrhizal dependence (MD were measured. The percentage AM colonization of A. malaccensis and A. crasna ranged from 83 to 97% and from 63 to 78%, respectively. Colonization by five AM fungi increased plant height, diameter, and shoot and root dry weights. N and P content of  the seedlings were also increased by AM colonization. Survival rates were higher in the AM-colonized seedlings at 180 days after transplantation than those in the control seedlings. The MD of Aquilaria species was higher than 55 %. The results suggested that AM fungi can be inoculated`to Aquilaria species under nursery conditions to obtain vigorous seedlings, and the field experiment is underway to clarify the role of AM fungi under field conditions.

  2. Formation of ring marks in stocked tilapia juveniles (Oreochromis aureus/O. niloticus (Perciformes: Cichlidae

    Directory of Open Access Journals (Sweden)

    Ana L Ibañez

    2007-12-01

    Full Text Available Lake Metztitlán was dried up completely in the spring of 1998 and refilled in August of that year. In the period September-November, two cohorts of 1.6 million juveniles of a tilapia hybrid were stocked (Oreochromis aureus/O. niloticus, and monitored every month for one year. Since the date of birth of these juveniles was known, the analyses focused on whether the ring marks of the scales, sagittae and opercula or the circuli of the scales could be used to age them. The ring marks of the scales and opercula showed great variability, and the sagittae had a significant relationship with length, but it is unclear if at least the first ring mark could be formed at the hatchery and reflect changes in diet and/or tank movements in the fish farm. The circuli had a continuous regular behavior, with a formation rate of 10.38±0.93 and 11.38±0.95 circuli/month for the first and second cohorts, respectively. This proportion was maintained during the study period, and could be of help to calculate an approximate age of juveniles, especially in stocked fish that show multiple ring marks because of manipulation in fish farms and stocking events. Rev. Biol. Trop. 55 (3-4: 1005-1013. Epub 2007 December, 28.El lago de Metztitlán se secó completamente en la primavera de 1998, inundándose nuevamente en agosto del mismo año para ser repoblado entre septiembre y noviembre con 1.6 millones de jóvenes de un híbrido de tilapia (Oreochromis aureus/O. niloticus en dos periodos. Ambas cohortes fueron monitoreadas mensualmente durante un año. Debido a que la fecha de nacimiento era conocida, el objetivo del estudio fue evaluar si las marcas anulares de las escamas, las sagittae y los opérculos, o los circuli de las escamas pueden usarse para estimar la edad. Los anillos de las escamas y opérculos mostraron gran variabilidad, mientras que las de las sagittae se relacionaron significativamente con la longitud, sin embargo no quedó claro si al menos el primer

  3. Performance of the ATLAS Muon Spectrometer and of Muon Identification at the LHC

    CERN Document Server

    Woudstra, MJ; The ATLAS collaboration

    2010-01-01

    The large cosmic data samples collected in fall 2009 by the ATLAS experiment have been used to study the performance of the Muon Spectrometer. Detailed studies of the basic Muon spectrometer performance in terms of sagitta resolution, tracking efficiency and momentum resolution are presented and provide an update with respect to the results recently published. The results are also compared with a cosmic data simulation recently improved with a more realistic drift chamber response. The recent collision data collected at a CM of 7 TeV have also been analyzed to determine basic Muon Spectrometer performance. The performance of the ATLAS muon identification was studied with 1 inverse nanobarn of LHC proton-proton collision data at a centre of mass energy of 7 TeV. Measured detector efficiencies, hit multiplicities, and residual distributions of reconstructed muon tracks are well reproduced by the Monte Carlo simulation. Exploiting the redundancy in the muon identification at detector and reconstruction level the...

  4. TPC track distortions: correction maps for magnetic and static electric inhomogeneities

    CERN Document Server

    Dydak, F; Nefedov, Y

    2003-01-01

    Inhomogeneities of the magnetic and electric fields in the active TPC volume lead to displacements of cluster coordinates, and therefore to track distortions. In case of good data taking conditions, the largest effects are expected from the inhomogeneity of the solenoidal magnetic field, and from a distortion of the electric field arising from a high voltage misalignment between the outer and inner field cages. Both effects are stable over the entire HARP data taking. The displacements are large compared to the azimuthal coordinate resolution but can be corrected with sufficient precision, except at small TPC radius. The high voltage misalignment between the outer and inner field cages is identified as the likely primary cause of sagitta distortions of TPC tracks. The position and the length of the target plays an important role. Based on a detailed modelling of the magnetic and static electric field inhomogeneities, precise correction maps for both effects have been calculated. Predictions from the correctio...

  5. Dominancy of Trichodesmium sp. in the Biawak Island

    Science.gov (United States)

    Prihadi, D. J.

    2018-03-01

    The Biawak Island is one of the small islands in West Java Province with an abundance of marine biological resources. This research was conducted to collect the primary producer zooplankton and water quality parameters. Direct observation is done by field surveys and measurement in situ for plankton and environmental parameters such as temperature, water transparency, water current, salinity, dissolved oxygen, and pH. Trichodesmium sp. was found dominance in where some other types of zooplankton were found in the area, like Scenedesmus sp., Sagitta sp., Acartia sp. also occurred. Further, the most abundance of Trichodesmium sp. was found in southern of Biawak Island where mangroves, coral and seagrass ecosystem provide nutrients which indirectly support the abundance of planktons. Trichodesmium sp. is plankton that can survive in water with minimum nutrient.

  6. Update on the MEIC electron collider ring design

    International Nuclear Information System (INIS)

    The electron collider ring of the Medium-energy Electron-Ion Collider (MEIC) at Jefferson Lab is designed to accumulate and store a high-current polarized electron beam for collisions with an ion beam. We consider a design of the electron collider ring based on reusing PEP-II components, such as magnets, power supplies, vacuum system, etc. This has the potential to significantly reduce the cost and engineering effort needed to bring the project to fruition. This paper reports on an electron ring optics design considering the balance of PEP-II hardware parameters (such as dipole sagitta, magnet field strengths and acceptable synchrotron radiation power) and electron beam quality in terms of equilibrium emittances.

  7. Update on the MEIC electron collider ring design

    International Nuclear Information System (INIS)

    The electron collider ring of the Medium-energy Electron-Ion Collider (MEIC) at Jefferson Lab is designed to accumulate and store a high-current polarized electron beam for collisions with an ion beam. We consider a design of the electron collider ring based on reusing PEPII components, such as magnets, power supplies, vacuum system, etc. This has the potential to significantly reduce the cost and engineering effort needed to bring the project to fruition. This paper reports on an electron ring optics design considering the balance of PEP-II hardware parameters (such as dipole sagitta, magnet field strengths and acceptable synchrotron radiation power) and electron beam quality in terms of equilibrium emittances.

  8. Biological processes in the water column of the South Atlantic Bight: Zooplankton responses

    Energy Technology Data Exchange (ETDEWEB)

    1990-02-07

    The goal of the Fall Removal Experiment 1987 was to determine the processes affecting the dependent and fate of low salinity coastal water and of biological material therein during fall when winds are mainly south-to westward. Five zooplankton taxa, Acartia tonsa, (A. tonsa) Paracalanus species (sp), Temora turbinata (T. turbinata), Oncaea sp, and Sagitta enflata were examined. Data on the distribution of all five taxa were presented, and distribution over time was also studied. The abundance of A. tonsa decreased tenfold over the 13 day sampling period, Paracalanus varied twofold and T. Turbinata showed little variability. The A. tonsa decrease was postulated to result from food abundance or predation, although the possible role of size distribution, water displacement and chlorophyll distribution will be examined in the future. A possible role of turbulence in zooplankton abundance is being examined. 8 refs., 5 figs.

  9. The design, status and performance of the ZEUS central tracking detector electronics

    International Nuclear Information System (INIS)

    Foster, B.; Cussans, D.G.; Fawcett, H.F.; Gilmore, R.S.; Heath, G.P.; Llewellyn, T.J.; Malos, J.; Morgado, C.J.S.; Tapper, R.J.; Gingrich, D.M.; Harnew, N.; Hallam-Baker, P.; Nash, J.; Khatri, T.; Shield, P.D.; McArthur, I.; Topp-Jorgensen, S.; Wilson, F.F.; Allen, D.; Baird, S.A.; Carter, R.; Galagadera, S.; Gibson, M.D.; Hatley, R.S.; Jeffs, M.; Milborrow, R.; Morissey, M.; Quinton, S.P.H.; White, D.J.; Lane, J.; Nixon, G.; Postranecky, M.; Jamdagni, A.K.; Marcou, C.; Miller, D.B.; Toudup, L.

    1992-01-01

    The readout system developed for the ZEUS central tracking detector (CTD) is described. The CTD is required to provide an accurate measurement of the sagitta and energy loss of charged particles as well as provide fast trigger information. This must be carried out in the HERA environment in which beams cross every 96 ns. The first two aims are achieved by digitizing chamber pulses using a pipelined 104 MHz FADC system. The trigger uses a fast determination of the difference in the arrival times of a pulse at each end of the CTD. It processes this data and gives information to the ZEUS global first level trigger. The modules are housed in custom-built racks and crates and read out using a DAQ system based on Transputer readout controllers. These also monitor data quality and produce data for the ZEUS second level Trigger. (orig.)

  10. Natural growth, otolith shape and diet analyses of Odontesthes nigricans Richardson (Atherinopsidae) from southern Patagonia

    Science.gov (United States)

    Lattuca, M. E.; Lozano, I. E.; Brown, D. R.; Renzi, M.; Luizon, C. A.

    2015-12-01

    Age and growth, otolith shape and diet of Odontesthes nigricans were analysed in order to provide an insight into the life history of the species and furthermore, to assess their possible use as a tool for discriminating silverside populations from the South Atlantic Ocean (Punta María) and Beagle Channel waters (Varela Bay). The age and growth analysis was performed by counting daily increments and annual marks in sagittae otoliths. Length-at-age data of individuals Otolith shape variation was also explored using elliptical Fourier analysis and it showed significant differences between Varela Bay and Punta María populations. Furthermore, gut content analysis characterized O. nigricans as an invertebrate predator, being benthic organisms the most important components of its diet, which also showed significant site dependence. The use of all these analyses contributed to a holistic approach which maximized the likelihood of correctly identifying both O. nigricans populations in the southernmost limit of the species distribution.

  11. Interannual variations in the hatching pattern, larval growth and otolith size of a sand-dwelling fish from central Chile

    Science.gov (United States)

    Rodríguez-Valentino, Camilo; Landaeta, Mauricio F.; Castillo-Hidalgo, Gissella; Bustos, Claudia A.; Plaza, Guido; Ojeda, F. Patricio

    2015-09-01

    The interannual variation (2010-2013) of larval abundance, growth and hatching patterns of the Chilean sand stargazer Sindoscopus australis (Pisces: Dactyloscopidae) was investigated through otolith microstructure analysis from samples collected nearshore (otolith size (radius, perimeter and area), related to body length of larvae, significantly decreased from 2010 to 2012, but increases significantly in 2013. Although the mean values of microincrement widths of sagitta otoliths were similar between 2010 and 2011 (around 0.6-0.7 μm), the interindividual variability increases in 2011 and 2013, suggesting large environmental variability experienced by larvae during these years. Finally, the hatching pattern of S. australis changed significantly from semi-lunar to lunar cycle after 2012.

  12. Otolith patterns of rockfishes from the northeastern Pacific.

    Science.gov (United States)

    Tuset, Victor M; Imondi, Ralph; Aguado, Guillermo; Otero-Ferrer, José L; Santschi, Linda; Lombarte, Antoni; Love, Milton

    2015-04-01

    Sagitta otolith shape was analysed in twenty sympatric rockfishes off the southern California coast (Northeastern Pacific). The variation in shape was quantified using canonical variate analysis based on fifth wavelet function decomposition of otolith contour. We selected wavelets because this representation allow the identifications of zones or single morphological points along the contour. The entire otoliths along with four subsections (anterior, ventral, posterodorsal, and anterodorsal) with morphological meaning were examined. Multivariate analyses (MANOVA) showed significant differences in the contours of whole otolith morphology and corresponding subsection among rockfishes. Four patterns were found: fusiform, oblong, and two types of elliptic. A redundancy analysis indicated that anterior and anterodorsal subsections contribute most to define the entire otolith shape. Complementarily, the eco-morphological study indicated that the depth distribution and strategies for capture prey were correlated to otolith shape, especially with the anterodorsal zone. © 2014 Wiley Periodicals, Inc.

  13. Relationships between otolith size and fish size in some mesopelagic and bathypelagic species from the Mediterranean Sea (Strait of Messina, Italy

    Directory of Open Access Journals (Sweden)

    Pietro Battaglia

    2010-08-01

    Full Text Available The length-weight relationships and the regressions between otolith size (length and width and fish length of some mesopelagic and bathypelagic fishes living in the central Mediterranean Sea were provided. Images and morphological description of otoliths (sagittae from 16 species belonging to the families of Gonostomatidae (1, Microstomatidae (2, Myctophidae (8, Phosichthyidae (2, Sternoptychidae (2 and Stomiidae (1 were given. The length-weight relationship showed an isometric growth in 13 species. No differences between right and left otolith sizes were detected by t-test, so a single linear regression was plotted against standard length (SL for otolith length (OL and otolith width (OW. Data fitted well to the regression model for both OL and OW to SL, for each species (R2 > 0.8. These relationships offer a helpful tool in feeding studies and also provide support to palaeontologists in their research on fish fossils.

  14. ATLAS Muon Drift Tube Electronics

    Energy Technology Data Exchange (ETDEWEB)

    Arai, Y [KEK, High Energy Accelerator Research Organisation, Tsukuba (Japan); Ball, B; Chapman, J W; Dai, T; Ferretti, C; Gregory, J [University of Michigan, Department of Physics, Ann Arbor, MI (United States); Beretta, M [INFN Laboratori Nazionali di Frascati, Frascati (Italy); Boterenbrood, H; Jansweijer, P P M [Nikhef National Institute for Subatomic Physics, Amsterdam (Netherlands); Brandenburg, G W; Fries, T; Costa, J Guimaraes da; Harder, S; Huth, J [Harvard University, Laboratory for Particle Physics and Cosmology, Cambridge, MA (United States); Ceradini, F [INFN Roma Tre and Universita Roma Tre, Dipartimento di Fisica, Roma (Italy); Hazen, E [Boston University, Physics Department, Boston, MA (United States); Kirsch, L E [Brandeis University, Department of Physics, Waltham, MA (United States); Koenig, A C [Radboud University Nijmegen/Nikhef, Dept. of Exp. High Energy Physics, Nijmegen (Netherlands); Lanza, A [INFN Pavia, Pavia (Italy); Mikenberg, G [Weizmann Institute of Science, Department of Particle Physics, Rehovot (Israel)], E-mail: brandenburg@physics.harvard.edu (and others)

    2008-09-15

    This paper describes the electronics used for the ATLAS monitored drift tube (MDT) chambers. These chambers are the main component of the precision tracking system in the ATLAS muon spectrometer. The MDT detector system consists of 1,150 chambers containing a total of 354,000 drift tubes. It is capable of measuring the sagitta of muon tracks to an accuracy of 60 {mu}m, which corresponds to a momentum accuracy of about 10% at p{sub T}= 1 TeV. The design and performance of the MDT readout electronics as well as the electronics for controlling, monitoring and powering the detector will be discussed. These electronics have been extensively tested under simulated running conditions and have undergone radiation testing certifying them for more than 10 years of LHC operation. They are now installed on the ATLAS detector and are operating during cosmic ray commissioning runs.

  15. ATLAS Muon Drift Tube Electronics

    CERN Document Server

    Arai, Y; Beretta, M; Boterenbrood, H; Brandenburg, G W; Ceradini, F; Chapman, J W; Dai, T; Ferretti, C; Fries, T; Gregory, J; Guimarães da Costa, J; Harder, S; Hazen, E; Huth, J; Jansweijer, P P M; Kirsch, L E; König, A C; Lanza, A; Mikenberg, G; Oliver, J; Posch, C; Richter, R; Riegler, W; Spiriti, E; Taylor, F E; Vermeulen, J; Wadsworth, B; Wijnen, T A M

    2008-01-01

    This paper describes the electronics used for the ATLAS monitored drift tube (MDT) chambers. These chambers are the main component of the precision tracking system in the ATLAS muon spectrometer. The MDT detector system consists of 1,150 chambers containing a total of 354,000 drift tubes. It is capable of measuring the sagitta of muon tracks to an accuracy of 60 microns, which corresponds to a momentum accuracy of about 10% at pT = 1 TeV. The design and performance of the MDT readout electronics as well as the electronics for controlling, monitoring and powering the detector will be discussed. These electronics have been extensively tested under simulated running conditions and have undergone radiation testing certifying them for more than 10 years of LHC operation. They are now installed on the ATLAS detector and are operating during cosmic ray commissioning runs.

  16. Assisted stellar suicide in V617 Sagittarii

    Science.gov (United States)

    Steiner, J. E.; Oliveira, A. S.; Cieslinski, D.; Ricci, T. V.

    2006-02-01

    Context: .V617 Sgr is a V Sagittae star - a group of binaries thought to be the galactic counterparts of the Compact Binary Supersoft X-ray Sources - CBSS. Aims: .To check this hypothesis, we measured the time derivative of its orbital period. Methods: .Observed timings of eclipse minima spanning over 30 000 orbital cycles are presented. Results: .We found that the orbital period evolves quite rapidly: P/dot{P} = 1.1×106 years. This is consistent with the idea that V617 Sgr is a wind driven accretion supersoft source. As the binary system evolves with a time-scale of about one million years, which is extremely short for a low mass evolved binary, it is likely that the system will soon end either by having its secondary completely evaporated or by the primary exploding as a supernova of type Ia. Conclusions: .

  17. Otoliths analysis of Mugil curema (Pisces: Mugilidae in Cuyutlan Lagoon, Mexico

    Directory of Open Access Journals (Sweden)

    E. Espino-Barr

    2013-01-01

    Full Text Available Se analizaron la morfología, la morfometría y los anillos de crecimiento de los otolitos: sagitta, asteriscus y lapillus de la lebrancha o liseta Mugil curema de la Laguna de Cuyutlán, Colima, México; asimismo, se analizaron las diferencias entre derecho e izquierdo y entre sexos. Los ejemplares fueron obtenidos de la captura comercial en los meses de agosto a octubre de 2007, agosto de 2008 y julio de 2011. En todos los casos se observó que el crecimiento de los otolitos es excéntrico con respecto al núcleo. Las relaciones entre la longitud total del pez y la longitud y ancho de los otolitos demostraron que esta estructura puede usarse para describir el crecimiento del pez. Se identificaron seis anillos de crecimiento en las sagittae y asterisci: especímenes con dos anillos midieron 21.80 cm de longitud total (TL (± 1.41 desviación estándar, los de tres anillos 22.90 (± 0.91, con cuatro anillos midieron 25.30 (± 0.39, con cinco anillos 28.30 (± 0.78 y con seis anillos 31.10 cm (± 2.22. En los lapilli, debido a su gran grosor, no fue posible observar marcas de crecimiento. Durante la etapa inmadura, los otolitos de las hembras son de mayor tamaño, pero una vez que alcanzan la madurez sexual, los otolitos de los machos alcanzan longitudes mayores.

  18. Sagittal otoliths description of Perciformes from Southeastern-South Brazil

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    César Santificetur

    2015-12-01

    Full Text Available The Collection of Teleostei Fish Otoliths of the Southeastern-Southern of Brazil (COSS-Brasil headquartered at the Oceanographic Institute, (IOUSP contains 65 species of Perciformes included in 30 families. In order to spread the modus operandi of the adopted analysis for the main characteristics of the sagittae we presented the results obtained for the families Centropomidae, Acropomatidae and Gerreidae. The classification of the otoliths morphological features followed Assis (2004 and Tuset et al. (2008. Fifteen features were analyzed and after, the frequency of the different types was calculated within and among each length classes of 20 mm. Statistical differences were analyzed by multiple χ2 tests (p>.0.05. The morphometric analysis included circularity and rectangularity. The main characteristics of the Centropomidae sagittae were: Shape: elliptic to trapezoidal; Posterior region: oblique or round; Sulcus acusticus: position median; orientation horizontal; morphology heterosulcoid; colliculum heteromorphic; ostium elliptic or rectangular; cauda tubular strongly curved; Circularity: 15.41 - 27.78; Rectangularity: 0.70 - 0.76. For the Acropomatidae we found: Anterior region: peaked; Dorsal edge: lobed to sinuate or sinuate to entire; Ventral edge: sinuate to entire; Sulcus acusticus: position median; orientation ascending or horizontal; opening ostial; morphology heterosulcoid; colliculum heteromorphic; ostium funnel-like or elliptic; Circularity: 15.75 - 19.77; Rectangularity: 0.60 - 0.74. The main characteristics of the Gerreidae were: Shape: elliptic; Anterior region: angled-round or peaked-round; Sulcus acusticus: position median or supramedian; orientation descending or horizontal; opening ostial; morphology heterosulcoid; colliculum heteromorphic; ostium funnel-like; Circularity: 14.11 - 22.86; Rectangularity: 0.53 - 0.74. We are preparing a practical guide of all the species of the collection including morphological, morphometric

  19. Fish Inner Ear Otolith Growth Under Real Microgravity (Spaceflight) and Clinorotation

    Science.gov (United States)

    Anken, Ralf; Brungs, Sonja; Grimm, Dennis; Knie, Miriam; Hilbig, Reinhard

    2016-06-01

    Using late larval stages of cichlid fish ( Oreochromis mossambicus) we have shown earlier that the biomineralization of otoliths is adjusted towards gravity by means of a neurally guided feedback loop. Centrifuge experiments, e.g., revealed that increased gravity slows down otolith growth. Microgravity thus should yield an opposite effect, i.e., larger than normal otoliths. Consequently, late larval cichlids (stage 14, vestibular system operational) were subjected to real microgravity during the 12 days FOTON-M3 spaceflight mission (OMEGAHAB-hardware). Controls were kept at 1 g on ground within an identical hardware. Animals of another batch were subsequently clinorotated within a submersed fast-rotating clinostat with one axis of rotation (2d-clinostat), a device regarded to simulate microgravity. Temperature and light conditions were provided in analogy to the spaceflight experiment. Controls were maintained at 1 g within the same aquarium. After all experiments, animals had reached late stage 21 (fish can swim freely). Maintenance under real microgravity during spaceflight resulted in significantly larger than normal otoliths (both lapilli and sagittae, involved in sensing gravity and the hearing process, respectively). This result is fully in line with an earlier spaceflight study in the course of which otoliths from late-staged swordtails Xiphophorus helleri were analyzed. Clinorotation resulted in larger than 1 g sagittae. However, no effect on lapilli was obtained. Possibly, an effect was present but too light to be measurable. Overall, spaceflight obviously induces an adaptation of otolith growth, whereas clinorotation does not fully mimic conditions of microgravity regarding late larval cichlids.

  20. Flujo de compuestos organoclorados en las cadenas troficas de la cienaga de Santa Marta

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    Hernado Campos Néstor

    1993-12-01

    Full Text Available Monthly samples of seston and fish species of different throphic levels were done at the Ciénaga Grande de Santa Marta in orderto describe organochlorinated compounds dynamics. The fish used were: atlantic anchoveta, mulletand catfish. The organochlorinated contents were determined by gas-liquid chromatography using n-Hexane and Acetonitrilo as extraction solvents. The results were compared to 14 organochlorinated pure patrons. The following accumulations patterns were found: atlantic nchoveta 2240 times, mullet 2343 times and catfish 21800 times and the magnifying factors among the differents thropic levels: mullet/atlantic anchoveta = 1.47, catfish/atlantic anchoveta = 2.6 and catfish/mullet = 3.3 The transport model of the organochlorinated compounds in the Cienaga Grande de Santa Marta is described bassed in these results.Con el fin de describir la dinámica de los compuestos organoclorados a través de la red trófica de la Ciénaga Grande de Santa Marta, se adelantaron muestreos simultáneos del seston y de peces de diferentes niveles tróficos: bocona (cetengraulis edentulus planctófago; lisa (Mugil incilis detritívoro; el chivo (Ariopsis boniiíei; carnívoro. Se determinaron los contenidos de organoclorados por cromatografía gas-líquido, empleando n-hexano y acetonitrilo como solventes de extracción y se compararon con 14 patrones puros de organoclorados. Los factores de acumulación para la bocona son de 2240 veces, para la lisa 2343 y para el chivo 21800. Los factores de magnificación entre los diferentes niveles tróficos son lisa/bocona = 1.47; chivo/lisa = 3.3; chivo/bocona = 2.6. Se describe el modelo de flujos de los organoclorados en la Ciénaga Grande de Santa Marta con base en estos resultados.

  1. Active tectonics and earthquake potential of the Myanmar region

    Science.gov (United States)

    Wang, Yu; Sieh, Kerry; Tun, Soe Thura; Lai, Kuang-Yin; Myint, Than

    2014-04-01

    This paper describes geomorphologic evidence for the principal neotectonic features of Myanmar and its immediate surroundings. We combine this evidence with published structural, geodetic, and seismic data to present an overview of the active tectonic architecture of the region and its seismic potential. Three tectonic systems accommodate oblique collision of the Indian plate with Southeast Asia and extrusion of Asian territory around the eastern syntaxis of the Himalayan mountain range. Subduction and collision associated with the Sunda megathrust beneath and within the Indoburman range and Naga Hills accommodate most of the shortening across the transpressional plate boundary. The Sagaing fault system is the predominant locus of dextral motion associated with the northward translation of India. Left-lateral faults of the northern Shan Plateau, northern Laos, Thailand, and southern China facilitate extrusion of rocks around the eastern syntaxis of the Himalaya. All of these systems have produced major earthquakes within recorded history and continue to present major seismic hazards in the region.

  2. KESINAMBUNGAN MOTIF HIAS MASA PRA-ISLAM STUDI KASUS PADA MIMBAR MASJID KAJORAN THE CONTINUITY OF ORNAMENTAL MOTIVES IN PRE-ISLAMIC PERIOD A CASE STUDY INTHE PODIUMOF KAJORAN MOSQUE

    Directory of Open Access Journals (Sweden)

    Endang Widyastuti

    2016-06-01

    ABSTRAK             Masuknya agama Islam memberikan warna baru dalam bidang kesenian khususnya seni hias. Dalam agama Islam terdapat larangan untuk menggambar makhluk hidup sehingga dilakukan upaya untuk menyamarkannya. Pada mimbar masjid Kajoran terdapat hiasan dengan motif binatang dan tumbuh-tumbuhan. Berdasarkan pengamatan diketahui bahwa selain motif-motif geometris, pada mimbar tersebut juga terdapat motif-motif berupa gajah, naga, burung, dan bunga teratai. Kemungkinan makna motif-motif hias tersebut masih relevan dengan ajaran Islam. Hal ini menunjukkan besarnya toleransi agama Islam terhadap kebudayaan yang telah ada pada suatu daerah, selama tidak bertentangan dengan ajaran agama Islam.   Kata Kunci: mimbar, motif hias, masjid Kajoran

  3. Application of multi-element clustering techniques of five Egyptian industrial sugar products

    International Nuclear Information System (INIS)

    Awadallah, R.M.; Mohamed, A.E.

    1995-01-01

    The concentration of 18 elements in different cane sugar products, i.e., cane sugar plants, crude and syrup juices, molasses, and the end products of the consumer sugar, were analyzed and processed. The samples were collected from five cities, i.e., Kom Ombo, Edfu, Armant, Deshna and Naga Hammady in Upper Egypt where the main Egyptian sugar industry factories are located. INAA was applied for the determination of Al, Ca, Cl, Co, Cr, Fe, Mg, Mn, Na, and Sc, while Cu, Li, P, Sn, V and Zn were determined by ICP-AES and Pb and As were determined by AAS. These three analytical methods were applied to optimize the sensitivity and the accuracy of the measurements in order to provide a sound basis for the obtention of reliable clustering results. (author). 5 refs., 8 figs., 3 tabs

  4. Mineral potential for incompatible element deposits hosted in pegmatites, alkaline rocks, and carbonatites in the Islamic Republic of Mauritania (phase V, deliverable 87): Chapter Q in Second projet de renforcement institutionnel du secteur minier de la République Islamique de Mauritanie (PRISM-II)

    Science.gov (United States)

    Taylor, Cliff D.; Giles, Stuart A.

    2015-01-01

    Review of PRISM-I documents and the National inventory of mineral occurrences suggests that resources of U, Th, Nb, Ta, Be, rare earth elements (REEs) and fluorite are known in Mauritania and have been exploited in the past at the Bou Naga alkaline complex. Several different deposit types are indicated by the available data. Pegmatitic veins are recorded in several areas of the Archean and Paleoproterozoic portions of the Rgueïbat Shield and are prospective for resources of Li, Be, Nb, Ta, U, Th, and REEs. Over 150 beryl pegmatites are known in the Khnefissat and Inkebden areas of the Chami greenstone belt, and additional concentrations of pegmatites are known in the Guelb Nich Sud area of the Sebkhet Nich greenstone belt and in the northeastern part of the Amsaga Complex. Due to the small size of these deposits, they are unlikely to be economic unless additional value can be gained by processing contained minerals for their industrial uses.

  5. El hombre hicotea y la ecología de los paisajes acuáticos en Resistencia en el San Jorge

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    Douglas McRae

    2015-01-01

    Full Text Available El presente artículo explora las representaciones de los paisajes acuáticos (ríos, caños, ciénagas en Resistencia en el San Jorge, el tercer volumen en Historia doble de la costa por Orlando Fals Borda. Utilizando tanto el texto como las notas de campo de Fals Borda, este articulo argumenta que Historia doble de la costa incorpora conscientemente la ecología del entorno natural de la Depresión Momposina dentro de la historia de resistencia popular de la región. La crisis ecológica perpetrada por la expansión histórica del capitalismo es presentada en Resistencia en el San Jorge como parte de una historia más larga de las luchas para la tierra y la justicia social en la Costa Atlántica de Colombia.

  6. CRÓNICA: EL MILAGROSO DE LA VILLA: EL ABOGADO DE LOS POBRES

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    Edgar Rey Sinning

    2004-08-01

    Full Text Available Por fin hemos llegado. Son las tres de la maÒana de un s·bado caluroso del mes de marzo. Estamos en la Villa de San Benito Abad. Hemos cumplido el deseo de ir a conocer de cerca lo que sucede durante dos dÌas en este municipio sucreÒo, localizado a las orillas de la ciÈnaga del mismo nombre. Ya los tenderetes de los vendedores trashumantes est·n por todas partes. TambiÈn han llegado campesinos (agropescadores, unos por carretera, otros por agua, convertidos para estas fechas en vendedores de abanicos de mano, mochilas, pellones, hamacas, sombreros. Adem·s, de pescado, loros, pericos y hasta bultos de leÒa. Por todas partes se ofrece productos tradicionales o algunos inventos nuevos.

  7. El callejón del Chorro: estudio arqueológico y documental de su evolución

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    Darwin A. Arduengo García

    2009-11-01

    Full Text Available El presente trabajo explica los cambios ocurridos durante el período colonial en un área bien conocida de la vieja ciudad intramuros, en el municipio Habana Vieja: el Callejón del Chorro, parte integral del contexto de la Plaza de la Catedral, antiguamente conocida como de la Ciénaga. Para este estudio se han tenido en cuentas datos aportados por el Registro Histórico, fundamentalmente las actas del Cabildo habanero entre los siglos XVI y XIX, así como los datos aportados por excavaciones conducidas por el autor en la casona de la calle San Ignacio # 68, donde se localizaron dos canales de la Zanja Real, el primer acueducto habanero, que se corresponden con el arribo del mismo a esta zona en el año 1592, así como infraestructuras de construcciones anteriores a la casona actual.

  8. Laboratory Evaluation of Australian Ration Packs.

    Science.gov (United States)

    1982-09-01

    74.85, 73.47, 3/8 73.86 Luncheon Meat Type I I Fat < 10% 11.31, 10.64, 4/4 11.74, 11.08 CRIM Cereal Block Moisture < 6% 6.37 1/1 Survival Biscuit...kg 0.8, 16.3, 8.0 3/3 Fruit Drink Powders Ascorbic Acid > 0.2% 0.152, 0.172, 3/3 0.092 0 EFR I Cereal Block Moisture < 6% 6.31 1/2 Chocolate Ascorbic...Laboratory PAPUA NEW GUINEA Jyothi Naga Headquarters MYSORE 570 010 India 2Australian Defence Cooperation Group (HO ADCG) MALAYSIA P.O. Box 2270

  9. Purification and characterization of an exo-type β-N-acetylglucosaminidase from Pseudomonas fluorescens JK-0412.

    Science.gov (United States)

    Park, J K; Kim, W J; Park, Y I

    2011-01-01

    To purify and characterize an exo-acting chitinolytic enzyme produced from a Gram-negative bacterium Pseudomonas fluorescens JK-0412. A chitinolytic bacterial strain that showed confluent growth on a minimal medium containing powder chitin as the sole carbon source was isolated and identified based on a 16S ribosomal DNA sequence analysis and named Ps. fluorescens JK-0412. From the culture filtrates of this strain, a chito-oligosaccharides-degrading enzyme was purified to apparent homogeneity with a molecular mass of 50 kDa on SDS-PAGE gels. The kinetics, optimum pH and temperature, and substrate specificity of the purified enzyme (named as NagA) were determined. An extracellular chitinolytic enzyme was purified from the Ps. fluorescens JK-0412 and shown to be an exo-type β-N-acetylglucosaminidase yielding GlcNAc as the final product from the natural chito-oligosaccharides, (GlcNAc)(n) , n = 2-5. As NagA is secreted extracellularly in the presence of colloidal chitin, Ps. fluorescens JK-0412 can be recognized as a potent producer for industry-level and cost-effective production of chitinolytic enzyme. This enzyme appears to have potential applications as an efficient tool for the degradation of chitinous materials and industry-level production of GlcNAc. To the best of our knowledge, this is the first report on an exo-type chitinolytic enzyme of Pseudomonas species. © 2010 The Authors. Journal of Applied Microbiology © 2010 The Society for Applied Microbiology.

  10. Identification and Characterization of a Bovine Sperm Acrosomal Matrix Protein and its Mechanism of Interaction with Acrosomal Hydrolases

    Science.gov (United States)

    Nagdas, Subir K; Smith, Linda; Mcnamara, Allen; Hernandez–Encarnacion, Luisa; Medina-Ortiz, Ilza

    2015-01-01

    Fertilization, the union of male and female gametes to create offspring, is an intricate biological process dependent upon several biochemical and physiological events. Our understanding of the functions of protein constituents of the outer acrosomal membrane-associated matrix complex (OMC) is limited. A highly purified OMC fraction isolated from bovine cauda sperm heads is comprised of 54, 50, 45, and 38–19kDa polypeptides. The objective of this study is to identify and to characterize the 45kDa (OMC45) polypeptide and to define its role in binding acrosomal hydrolases and to examine the fate of OMC45 polypeptide during the acrosome reaction. We isolated OMC45 polypeptide from the high-pH insoluble fraction of OMC. Proteomic analysis of OMC45 by MALDI–TOF–TOF yielded 8 peptides that matched the NCBI database sequence of Tektin 3 (TEKT3). Triton X–100–permeabilized cauda sperm exhibited intense staining of the acrosomal segment with anti–OMC45 and anti–TEKT3. The OMC45 polypeptide was solubilized by RIPA (radio-immunoprecipitation assay) buffer extraction. The solubilized fraction was subjected to immunoprecipitation analysis. The OMC45 polypeptide was recovered in the anti–OMC45 immunoprecipitation pellet. An identical blot stained with anti–TEKT3 exhibited the presence of TEKT3 polypeptide in the anti–OMC45 pellet. Our immunofluorescence and biochemical studies confirm the proteomics identification of OMC45 polypeptide; that it exhibits a sequence similarity to TEKT3. OMC45 glycoprotein possesses both N–linked and O–linked oligosaccharides. Deglycosylated OMC45 revealed a significant reduction in both acrosin and N–acetylglucosaminidase (NAGA) binding in comparison with acrosin and NAGA binding to a native OMC45 polypeptide, demonstrating the important role of oligosaccharides in hydrolase binding. OMC45 polypeptide is not released during the acrosome reaction but remains in the particulate cell subfraction, associated with the hybrid

  11. Determination of the Relative Sediment Concentration in Water Bodies Using Remote Sensing Methodology

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    Germán Vargas Cuervo

    2017-01-01

    Full Text Available Los estudios para la determinación de la concentración relativa de sedimentos (CRS en cuerpos de agua como ríos, ciénagas o deltas fluviales requieren equipos especializados, trabajo de campo y análisis de laboratorio de muestras con altos costos económicos. Los sensores remotos, en regiones del espectro electromagnético óptico, particularmente en el rango visible entre 0.4 y 0.6 μm, permiten determinar contrastes radiométricos asociados a la concentración relativa de sedimentos en cuerpos de agua. En este trabajo, se presenta un análisis de las principales propiedades o características espectrales, espaciales y radiométricas de los sensores remotos para la determinación de la concentración relativa de sedimentos en cuerpos de agua, un proceso metodológico para su cartografía en un momento determinado y en un periodo de tiempo establecido. Esta cartografía está basada en el procesamiento digital de las imágenes pero no en mediciones directas en campo. Finalmente se presentan aplicaciones en el litoral costero y deltaico de la parte suroccidental del mar Caribe colombiano entre Barranquilla y Punta Piedra y en la zona lacustre del Embalse del Guájaro y las Ciénagas del Jobo y Capote en la cuenca alta del Canal del Dique, Colombia.

  12. Socio-Economic, Demographic and Lifestyle Determinants of Overweight and Obesity among Adults of Northeast India.

    Science.gov (United States)

    Rengma, Melody Seb; Sen, Jaydip; Mondal, Nitish

    2015-07-01

    Overweight and obesity are the accumulation of high body adiposity, which can have detrimental health effects and contribute to the development of numerous preventable non-communicable diseases. This study aims to evaluate the effect of socio-economic, demographic and lifestyle factors on the prevalence of overweight and obesity among adults belonging to the Rengma-Naga population of North-east India. This cross-sectional study was conducted among 826 Rengma-Naga individuals (males: 422; females: 404) aged 20-49 years from the Karbi Anglong District of Assam, using a two-stage stratified random sampling. The socio-economic, demographic and lifestyle variables were recorded using structured schedules. Height and weight were recorded and the Body Mass Index (BMI) was calculated using standard procedures and equation. The WHO (2000) cut-off points were utilized to assess the prevalence of overweight (BMI ≥23.00-24.99 kg/m(2)) and obesity (BMI ≥25.00 kg/m(2)). The data were analysed using ANOVA, chi-square analysis and binary logistic regression analysis using SPSS (version 17.0). The prevalence of overweight and obesity were 32.57% (males: 39.34%; females: 25.50%) and 10.77% (males: 9.95%; females: 11.63%), respectively. The binary logistic regression analysis showed that age groups (e.g., 40-49 years), education (≥9(th) standard), part-time occupation and monthly income (≥Rs.10000) were significantly associated with overweight and obesity (pobesity among adults. Suitable healthcare strategies and intervention programmes are needed for combating such prevalence in population.

  13. Antalya İlinde Portakal Bahçelerinde Gözlenen Önemli Zararlı ve Yararlı Böcek Popülasyonları

    Directory of Open Access Journals (Sweden)

    Vildan GÖL

    2016-06-01

    Full Text Available Bu çalışmada, 2014 yılında, Antalya ilinde bulunan iki portakal bahçesinde önemli zararlı ve yararlı böcek popülasyonları belirlenmiştir. Bahçelerde ağırlıklı olarak portakal bulunması nedeniyle örneklemeler de bu tür üzerinde yapılmıştır. Çalışma süresince zararlılara karşı herhangi bir mücadele yöntemi uygulanmamıştır. Çalışmada örneklerin toplanması için gözle kontrol yöntemi, yaprak, sürgün, meyve örnekleme yöntemi, darbe ve tuzakla yakalama yöntemi kullanılmıştır. Çalışma sonucunda zararlı türler olarak Tetranychus urticae (Koch (Acarina: Tetranychidae, Empoasca decipiens (Paoli, Asymmetrasca decedens (Paoli (Hemiptera: Cicadellidae, Dialeurodes citri (Ashmead, Aleurothrixus floccosus (Maskell (Hem.: Aleyrodidae, Aphis craccivora (Koch (Hem.: Aphididae, Icerya purchasi Maskell (Hem.: Margarodidae, Coccus hesperidum (Linnaeus, Ceroplastes floridensis (Comstock (Hem.: Coccidae, Aonidiella aurantii (Maskell, Aonidiella citrina (Coquillet, Parlatoria pergandii (Comstock (Hem.: Diaspididae, Planococcus citri (Risso (Hem.: Pseudococcidae, Ceratitis capitata (Wiedemann (Diptera: Tephritidae ve Phyllocnistis citrella (Stainton (Lepidoptera: Gracillaridae saptanmıştır. Bunlardan E. decipiens (Paoli, A. decedens (Paoli, A. floccosus (Maskell, A. aurantii (Maskell ve Parlatoria pergandii (Comstock en yaygın türler olarak belirlenmiştir. Ayrıca 2 takıma bağlı 7 avcı ve asalak tür saptanmıştır. Bu türler: Chrysoperla carnea (Stephens (Neuroptera: Chrysopidae, Coccinella septempunctata L., Chilocorus bipustulatus L., Rhyzobius lophantae (Blaisdell, Oenopia conglobata (L. (Coleoptera: Coccinellidae, Aphytis melinus DeBach ve Comperiella bifasciata (Coleoptera: Aphelinidae’ dır. Çalışmada ayrıca zararlı iki cicadellid türü ile A. floccosus, A. aurantii, P. pergandii, C. capitata‘nın ve doğal düşmanlardan C. carnea’nın, coccinellidlerin, A. melinus ve E. citrina

  14. First case report of invasive pseudoterranoviasis in Italy.

    Science.gov (United States)

    Cavallero, Serena; Scribano, Daniela; D'Amelio, Stefano

    2016-10-01

    Members of the genera Anisakis and Pseudoterranova are the main causative agents of human anisakidosis: the disease is worldwide distributed, with major impact in countries with a large consumption of raw fish. Because of unspecific symptoms and limited diagnostic tools, incidence and burden of disease are probably underestimated. In Italy, all human infestations where the etiological agent has been properly identified, have been associated to the parasitic species Anisakis pegreffii, the most frequent anisakid in the Mediterranean area. Here, an invasive human case of pseudoterranoviasis is described for the first time in Italy: in 2015, a woman was found infected during a colonoscopy scheduled after the occurrence of nonspecific clinical symptoms. The nematode was found penetrating the ascending colon. The identification was performed by sequencing the mitochondrial region cox2 and by comparison to GenBank retrieved material using the BLAST search tool. The sample showed a 99% identity with Pseudoterranova decipiens sensu stricto. The record underlines the potential risk due to the consumption of raw or undercooked imported fishes. Copyright © 2016 Elsevier Ireland Ltd. All rights reserved.

  15. Biodiversity of seagrass bed in Balanan Resort - Baluran National Park

    Science.gov (United States)

    Soedarti, T.; Hariyanto, S.; Wedayanti, A.; Rahmawati, A. D.; Safitri, D. P.; Alificia, R. I.; Suwono

    2017-09-01

    Seagrass beds are flowering plants that live on the seabed. Seagrass provides a habitat for diverse flora and fauna, spawning ground, nursery ground, raising ground, and feeding ground. Balanan Resort - Baluran National Park has many beaches, such as Kajang Beach, Si Banjir Beach, Kakapa Beach, and Serondo Beach. This study was aimed to determine species composition, seagrass dominated, and the diversity index of seagrass and substrate in Resort Balanan - Baluran National Park. This research was carried out in Kajang Beach, Sibanjir Beach, Kakapa Beach, and Sirondo Beach from August to September 2015 using belt transect method, each transect consists of 15 plots (19 transects = 285 plots) and using the frame of 1x1 m. This research found seven genera and ten species : Cymodoce (C rotundata and C. serrulata), Syringodium (S. isoelifolium), Thallassodendron (T. ciliatum), Enhalus (E. acoroides) , Halodule (H. univernis and H. pinifolia), Halophila (H. ovalis and H. decipiens), and Thalassia (T. hemprichii). The diversity index of seagrass bed was moderate [H'=1.90] in Balanan Resort. The substrate of seagrass bed was mud, gravel, sand, clay sand and rubble in Balanan Resort. The dominance index was near zero [C = 0.194], that means no dominant species.

  16. Contributions to the moss flora of Giresun Region (Sebinkarahisar and Alucra district).

    Science.gov (United States)

    Ozdemir, T; Batan, N

    2008-08-15

    The aim of the study was to obtain knowledge on the moss flora of the Giresun Region-rather than to identify the entire range moss flora of the region. After the identification of 287 moss specimens collected from the research area between June and August in 2007 and 2008, total 85 taxa were defined. These taxa belong to 17 families and 37 genera of Bryopsida (Musci). Among them, 14 taxa -Hygroamblystegium irriguum Hedw., Rhynchostegium confertum (Dicks.) B. S. G., Rhynchostegium alpinum Huds. ex With., Bryum dichotomum Hedw., Bryum laevifilum Syed., Hygrohypnum smithii (Sw.) Broth., Grimmia decipiens (Schultz) Lindb., Grimmia tergestina Tomm. Ex Bruch and Schimp., Schistidium flaccidum (DeNot.) Ochyra., Schistidium platyphyllum (Mitt.) Kindb., Palustriella decipens (De Not.) Ochyra., Desmatodon latifolius (Hedw.) Brid., Phascum curvicolle Hedw., Syntrichia princeps (De Not.) Mitt. new for A4 grid square (40 degrees- 42' N, 38 degrees -42' E) which was adopted by Henderson. Thirty six taxa are new for Giresun Province. All taxa are new for study area. For every each taxon, the habitat pattern and distribution data are presented.

  17. Phylogenetic diversity of Moroccan cork oak woodlands fungi

    Directory of Open Access Journals (Sweden)

    Abourouh M.

    2009-01-01

    Full Text Available Interspecific variation among 87 sporocarps of fungi belonging to 15 genera and 39 species were evaluated by analyzing the internal transcribed spacer (ITS of the rDNA region using restriction fragment length polymorphism (RFLP. The ITS region was first amplified by polymerase chain reaction (PCR with specific primers and then cleaved with different restriction enzymes. Amplification products, which ranged between 500 and 950 base pairs (bp, were obtained for all the isolates analyzed. The degree of polymorphism observed did not allow proper identification of most of the species. Cleavage of amplified fragments with the restriction enzymes Alu I, EcoR I and Hinf I revealed extensive polymorphism. The fifteen genera and most species presented specific restriction patterns. The only species not identifiable by a specific pattern belonged to the genera Russula (R. decipiens and R. straminea. These species might be considered as closely related species. The Pisolithus sporocarps had two ITS-RFLP types with one dominating. ITS sequencing confirms that the two RFLP types correspond to two distinct species of Pisolithus. Our data show the potential of ITS region PCR-RFLP for the molecular characterization of ectomycorrhizal fungi and their identification and monitoring in artificial inoculation programs.

  18. Parasites in harbour seals ( Phoca vitulina) from the German Wadden Sea between two Phocine Distemper Virus epidemics

    Science.gov (United States)

    Lehnert, K.; Raga, J. A.; Siebert, U.

    2007-12-01

    Parasites were collected from 107 harbour seals ( Phoca vitulina) found on the coasts of Schleswig-Holstein, Germany, between 1997 and 2000. The prevalence of the parasites and their associated pathology were investigated. Eight species of parasites, primarily nematodes, were identified from the examined organs: two anisakid nematodes ( Pseudoterranova decipiens (sensu lato) , Contracaecum osculatum (sensu lato)) from the stomach, Otostrongylus circumlitus (Crenosomatidae) and Parafilaroides gymnurus (Filaroididae) from the respiratory tract, one filarioid nematode ( Acanthocheilonema spirocauda) from the heart, two acanthocephalans, Corynosoma strumosum and C. semerme (Polymorphidae), from the intestine and an ectoparasite, Echinophthirius horridus (Anoplura, Insecta). Lungworm infection was the most prominent parasitological finding and secondary bacterial bronchopneumonia the most pathogenic lesion correlated with the parasites. Heavy nematode burdens in the respiratory tract were highly age-related and more frequent in young seals. A positive correlation was observed between high levels of pulmonary infection and severity of bronchopneumonia. The prevalence of lungworms in this study was higher than in seals that died during the 1988/1989 Phocine Distemper Virus epidemic, and the prevalence of acanthocephalans and heartworms had decreased compared to findings from the first die-off.

  19. A clastic-evaporitic deposit from the Cretaceous of northeastern Mexico: La Mula-La Virgen transition

    Science.gov (United States)

    Gutierrez-Alejandro, Alejandra G.; Chacon-Baca, Elizabeth; Rosales-Domínguez, Carmen; Ramírez-Peña, César Francisco; Girón, Patricia; Grajales-Nishimura, José Manuel

    2017-12-01

    Units from La Mula and La Virgen formations outcrop in central Coahuila in northeastern Mexico. During the Early Cretaceous this sedimentary succession was deposited between the Coahuila and the Tamaulipas blocks as a transitional ramp succession that later became the Sabinas Basin. For years, the lack of fossils in La Virgen Formation has prevented a precise age resolution. This work provides new biostratigraphic data from Potrero de Menchaca, a representative locality that records a siliciclastic-carbonate transition from the clastic La Mula Formation and the evaporites from La Virgen Formation. The microfacies association indicates the presence of foraminiferan representatives of Choffatella decipiens and Charentia sp. in close association with the rare green alga Thaumotoporella parvovesiculifera, a few mollusk bioclasts and other algal fragments that gradually increase in size as the evaporitic succession become more frequent. In addition to the microfossils reported, a significant contribution of this work includes a preliminary geochemical analysis from the preceding green shales from La Mula Formation, which are reported from the first time for this locality and holds high potential for provenance studies.

  20. Cyclopidae (Crustacea, Copepoda from the upper Paraná River floodplain, Brazil

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    LANSAC-TÔHA F. A.

    2002-01-01

    Full Text Available Cyclopid copepods from samples of fauna associated with aquatic macrophytes and plancton obtained in lotic and lentic environments were obtained from the upper Paraná River floodplain (in the states of Paraná and Mato Grosso do Sul, Brazil. Macrophytes were collected in homogeneous stands and washed. Plankton samples, taken from the water column surface and bottom, were obtained using a motor pump, with a 70 mum mesh plankton net for filtration. Twelve taxa of Cyclopidae were identified. Among them, Macrocyclops albidus albidus, Paracyclops chiltoni, Ectocyclops rubescens, Homocyclops ater, Eucyclops solitarius, Mesocyclops longisetus curvatus, Mesocyclops ogunnus, and Microcyclops finitimus were new finds for this floodplain. Eight species were recorded exclusively in aquatic macrophyte samples. Among these species, M. albidus albidus and M. finitimus presented greatest abundances. Only four species were recorded in plankton samples, and Thermocyclops minutus and Thermocyclops decipiens are limited to this type of habitat. Among these four species, T. minutus is the most abundant, especially in lentic habitats.

  1. Cyclopidae (Crustacea, Copepoda from the upper Paraná River floodplain, Brazil

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    F. A. LANSAC-TÔHA

    Full Text Available Cyclopid copepods from samples of fauna associated with aquatic macrophytes and plancton obtained in lotic and lentic environments were obtained from the upper Paraná River floodplain (in the states of Paraná and Mato Grosso do Sul, Brazil. Macrophytes were collected in homogeneous stands and washed. Plankton samples, taken from the water column surface and bottom, were obtained using a motor pump, with a 70 mum mesh plankton net for filtration. Twelve taxa of Cyclopidae were identified. Among them, Macrocyclops albidus albidus, Paracyclops chiltoni, Ectocyclops rubescens, Homocyclops ater, Eucyclops solitarius, Mesocyclops longisetus curvatus, Mesocyclops ogunnus, and Microcyclops finitimus were new finds for this floodplain. Eight species were recorded exclusively in aquatic macrophyte samples. Among these species, M. albidus albidus and M. finitimus presented greatest abundances. Only four species were recorded in plankton samples, and Thermocyclops minutus and Thermocyclops decipiens are limited to this type of habitat. Among these four species, T. minutus is the most abundant, especially in lentic habitats.

  2. Variaciones de abundancia y biomasa del zooplancton en un embalse tropical oligo-mesotrófico del norte de Venezuela

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    Sandra Merayo

    2010-06-01

    Full Text Available La abundancia del zooplancton en los embalses está determinada principalmente por la velocidad y el contenido del agua, pero se sabe relativamente poco sobre los embalses tropicales. Se estudió la distribución temporal y espacial de la abundancia y la biomasa del zooplancton en el eje longitudinal del embalse de Clavellinos, en el norte de Venezuela, entre octubre 2006 y septiembre 2007. El zooplancton fue recolectado en el estrato oxigenado con una red de plancton. Un total de 16 taxones fueron identificados: Copepoda, Cladocera, Rotifera, Ostracoda y Diptera. Thermocyclops decipiens (Copepoda, Cyclopoida dominó la comunidad, mientras que los rotíferos fueron los más diversos, con 10 especies. La abundancia del zooplancton varió de 31 a 101ind/l en E1, 36 a 84ind/l en E2, y, de 30 a 250ind/L en el E3. La biomasa varió de 97,4 a 1406.3μg/l en E1, 108,5 a 397.2μg/l en E2, y de 25,9 a 763.9μg/l en el E3. Esta comunidad de zooplancton pareciσ responder a las variaciones ambientales en el embalse, mαs que a las variaciones en la disponibilidad de recursos.

  3. Three new country records from the genus Limnephilus Leach, 1815 (Trichoptera: Limnephilidae from the Republic of Kosovo

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    Halil Ibrahimi

    2014-11-01

    Full Text Available New faunistic data on Trichoptera from Kosovo based on sampling carried out during the autumn of 2013 and first half of 2014 are presented. Limnephilus bipunctatus was found in a small stream in Kaqandoll village located in northern Kosovo and in Shtuticë village located in central Kosovo. Two male specimens of Limnephilus decipiens  were found at Gurrat e Hasan Agës Springs and Bistrica e Lloqanit River, an alpine area in the Lloqan mountains, which belong to the Bjeshkët e Nemuna mountains. A single male specimen of Limnephilus stigma was found in Klinë, located in central Kosovo. All three species are rare in Kosovo. A preliminary checklist of eight species of Limnephilus from Kosovo is provided along with biogeographical and ecological notes. This paper is a further contribution to the faunistic list of Trichoptera of Kosovo, one of the least explored countries in Europe.

  4. Differences in pollination success between local and foreign flower color phenotypes: a translocation experiment with Gentiana lutea (Gentianaceae

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    Javier A. Guitián

    2017-02-01

    Full Text Available Background The adaptive maintenance of flower color variation is frequently attributed to pollinators partly because they preferentially visit certain flower phenotypes. We tested whether Gentiana lutea—which shows a flower color variation (from orange to yellow in the Cantabrian Mountains range (north of Spain—is locally adapted to the pollinator community. Methods We transplanted orange-flowering individuals to a population with yellow-flowering individuals and vice versa, in order to assess whether there is a pollination advantage in the local morph by comparing its visitation rate with the foreign morph. Results Our reciprocal transplant experiment did not show clear local morph advantage in overall visitation rate: local orange flowers received more visits than foreign yellow flowers in the orange population, while both local and foreign flowers received the same visits in the yellow population; thus, there is no evidence of local adaptation in Gentiana lutea to the pollinator assemblage. However, some floral visitor groups (such as Bombus pratorum, B. soroensis ancaricus and B. lapidarius decipiens consistently preferred the local morph to the foreign morph whereas others (such as Bombus terrestris consistently preferred the foreign morph. Discussion We concluded that there is no evidence of local adaptation to the pollinator community in each of the two G. lutea populations studied. The consequences for local adaptation to pollinator on G. lutea flower color would depend on the variation along the Cantabrian Mountains range in morph frequency and pollinator community composition.

  5. The distribution of seagrasses in Dominica, Lesser Antilles

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    S.C.C Steiner

    2010-10-01

    Full Text Available Seagrass beds are the largest organism-built marine habitat in Dominica, yet have only been surveyed since 2007. Standardized examinations along a depth gradient between 0 and 24m, focusing on magnoliophyte species composition and benthic cover of shoots at 17 seagrass bed sites, were carried out between September 10 and December 7, 2008. The Cymodoceaceae Syringodium filiforme (Kuetzing 1860 and Halodule wrightii (Ascherson 1868, as well as the Hydrocharitaceae Halophila decipiens (Ostenfeld 1902, H. stipulacea (Fosskal & Ascherson 1867 and Thalassia testudinum (Banks ex König 1805 displayed distinct regional and horizontal distribution patterns. Syringodium filiforme is the island’s dominant seagrass along the western and northern coasts, occurring at depths between 2 and 18m and with a mean benthic cover ranging from 0.9-10% along the West coast. Along the North coast it grew between 0.2 and 1m depth with a mean maximum benthic cover of 48.9%. Halodule wrightii grew along the North and West coasts, in depths between 1 and 14m in areas of recent and chronic disturbances. Its delicate morphology and sparse benthic cover (Pastos marinos son los ambientes más grandes constituidos por organismos en Dominica. Sin embargo, sólo se han examinado desde 2007. Entre el 10 de septiembre y 9 de diciembre 2008, se examinaron la composicion de especies y la densidad de magnoliofitas en profundidades de 0 a 24m. Los Cymodoceaceae: Syringodium filiforme y Halodule wrightii, tal como los Hydrocharitaceae: Halophila decipiens, H. stipulacea y Thalassia testudinum, mostraron una distribución regional y horizontal muy distinta. Syringodium filiforme fue la especie dominante en las costas del oeste y del norte de la isla. Se encontró en profundidades de 2 a 18m y con un promedio de cobertura béntica de 0.9-10% en la costa del oeste. En las costas del norte creció entre 0.2 y 1m de profundidad con un pormedio de cobertura béntica de 48.9%. Halodule

  6. Spatial distribution and secondary production of Copepoda in a tropical reservoir: Barra Bonita, SP, Brazil

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    MJ. Santos-Wisniewski

    Full Text Available The present paper aims to describe the spatial distribution of zooplankton copepods, their biomass and instantaneous secondary production, in Barra Bonita, a large eutrophic, polymitic reservoir (22° 29' S and 48° 34' W on the Tietê River, of the Paraná basin. Sampling was carried out during two seasons: dry winter and rainy summer. Species composition, age structure and numerical density of each copepod species population were analyzed at 25 sampling stations. Secondary production was calculated for Copepoda, the dominant group in zooplankton communities, taking Calanoida and Cyclopoida separately. Copepoda represented the largest portion of the total zooplankton biomass, the dominant species being Notodiaptomus iheringi among the Calanoida and Mesocyclops ogunnus and Thermocyclops decipiens among the Cyclopoida. The production of Copepoda was higher during the rainy summer (23.61 mgDW.m-3.d-1 in January 1995 than during the dry winter season (14 mgDW.m-3.d-1 in August 1995, following the general pattern of abundance for the whole zooplankton community. Among the copepods, Cyclopoida production was higher than that of Calanoida, a pattern commonly observed for tropical lakes and reservoirs. Barra Bonita copepods are very productive, but there was a great degree of spatial heterogeneity, related to the physical and chemical conditions, particularly the level of nutrients and also to phytoplankton biomass.

  7. New xenophytes from La Palma (Canary Islands, Spain, with emphasis on naturalized and (potentially invasive species

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    R. Otto

    2016-07-01

    Full Text Available Many years of field work in La Palma (western Canary Islands yielded a number of interesting new records of non-native vascular plants. Amaranthus blitoides, A. deflexus, Aptenia cordifolia, Argemone ochroleuca, Begonia schmidtiana, Capsella rubella, Cardamine hamiltonii, Centratherum punctatum, Cerastium fontanum subsp. vulgare, Chasmanthe floribunda (widely confused with C. aethiopica and Crocosmia xcrocosmiiflora in Macaronesia, Chenopodium probstii, Commelina latifolia var. latifolia, Dichondra micrantha, Dysphania anthelmintica, Epilobium ciliatum, Erigeron sumatrensis, Erodium neuradifolium, Eucalyptus globulus, Euphorbia hypericifolia, E. maculata, Gamochaeta antillana, Geranium pyrenaicum, Hedychium coronarium, Hypochaeris radicata, Kalanchoe daigremontiana, K. delagoensis, K. xhoughtonii, Kickxia commutata subsp. graeca, K. spuria subsp. integrifolia, Lactuca viminea subsp. ramosissima, Landoltia punctata, Malvastrum coromandelianum subsp. capitatospicatum, Oenothera jamesii, Orobanche nana, Oxalis latifolia, Papaver hybridum, P. setigerum, Pilea microphylla, Podranea ricasoliana, Polygonum arenastrum, Portulaca granulatostellulata, P. nicaraguensis, P. nitida, P. papillatostellulata, Rumex crispus subsp. crispus, R. pulcher subsp. pulcher, R. xpratensis, Sechium edule, Sida spinosa var. angustifolia, Silene nocturna, Solanum abutiloides, S. alatum, S. decipiens, Sonchus tenerrimus, Spergularia marina, Stellaria pallida, Tragopogon porrifolius subsp. australis, Tribulus terrestris and Trifolium repens subsp. repens are naturalized or (potentially invasive xenophytes, reported for the first time from either the Canary Islands or from La Palma. 37 additional, presumably ephemeral taxa are reported for the first time from the Canary Islands, whereas 56 ephemeral taxa are new for La Palma..

  8. Tropical species at the northern limit of their range: composition and distribution in Bermuda's benthic habitats in relation to depth and light availability.

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    Manuel, Sarah A; Coates, Kathryn A; Kenworthy, W Judson; Fourqurean, James W

    2013-08-01

    Surveys were undertaken on the shallow Bermuda marine platform between 2006 and 2008 to provide a baseline of the distribution, condition and environmental characteristics of benthic communities. Bermuda is located in temperate latitudes but coral reefs, tropical seagrasses and calcareous green algae are common in the shallow waters of the platform. The dominant organisms of these communities are all living at or near their northern latitudinal range limits in the Atlantic Ocean. Among the major benthic autotrophs surveyed, seagrasses were most restricted by light availability. We found that the relatively slow-growing and long-lived seagrass Thalassia testudinum is restricted to habitats with much higher light availability than in the tropical locations where this species is commonly found. In contrast, the faster growing tropical seagrasses in Bermuda, Syringodium filiforme, Halodule sp. and Halophila decipiens, had similar ecological compensation depths (ECD) as in tropical locations. Increasing sea surface temperatures, concomitant with global climate change, may either drive or allow the poleward extensions of the ranges of such tropical species. However, due to latitudinal light limitations at least one abundant and common tropical autotroph, T. testudinum, is able to occupy only shallower depths at the more temperate latitudes of Bermuda. We hypothesize that the poleward shift of seagrass species ranges would be accompanied by restrictions to even shallower depths of T. testudinum and by very different seagrass community structures than in tropical locations. Copyright © 2013 Elsevier Ltd. All rights reserved.

  9. Ship traffic and the introduction of diatoms and dinoflagellates via ballast water in the port of Annaba, Algeria

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    Cheniti, Radhia; Rochon, André; Frihi, Hocine

    2018-03-01

    We present here the first study on the role of ship traffic in the introduction of potentially harmful and/or non-indigenous species in the port of Annaba (Algeria). A total of 25 ships of two different types (general cargo and bulk carriers) were sampled and separated into two categories: oceanic and Mediterranean ships. We estimated propagule pressure of high-risk coastal phytoplankton delivered in ballast water to the port of Annaba. We identified 40 diatom and 38 dinoflagellate taxa, among which, 11 harmful/toxic taxa: Pseudo-nitzschia spp., Alexandrium tamarense, Alexandrium sp., Dinophysis acuminata, Dinophysis rotundata, Dinophysis sp., Gonyaulax spinifera, Gymnodinium catenatum, Lingulodinium polyedrum, Protoceratium reticulatum and cyst of Alexandrium sp. In addition, 8 taxa (5 diatoms, 1 dinoflagellate and 2 dinoflagellate cysts) never observed in the Annaba region were considered as potentially non-indigenous: Actinoptychus splendens, Coscinodiscus asteromphalus, Coscinodiscus lineatus, Odentella granulata, Thalassiosira cf. decipiens, Prorocentrum scutellum, cyst of Polykrikos kofoidii and Islandinium minutum. Several factors were examined, including ship routes, ballast water age and the volume of ballast water discharged. Our analyses revealed that diatom and dinoflagellate abundances decreased with ballast water age, possibly as a result of mortality of species due to voyage length and lack of light in ballast tanks. Estimates of actual propagule pressure, diatoms and dinoflagellates abundances varied from 1 to 4 × 108 cells/ship. The results of this study could serve as the baseline for the development and implementation of monitoring and ballast water management programs in ports of Algeria.

  10. Studies on the Survival and Growth of Fry of Catla catla (Hamilton, 1922 Using Live Feed

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    Abdul Kadhar

    2014-01-01

    Full Text Available Effect of live feed on the survival and growth of fry of Catla catla using three different live feeds namely, Cyclopoid (Thermocyclops decipiens, Cladoceran (Moina micrura, and mixed diet (Cyclopoid and Cladoceran were studied. Commercial feed (Sunder’s feed was used as control. Feeding experiments were carried out in 100 L tanks for 40 days. Fish fry fed with the mixed diet showed significantly better survival rate (54.80 ± 2.43% than those fed with other food types (P<0.001. Fish fry fed with Cyclopoid had significantly (P<0.001 better growth (26.03 ± 1.88 mm, weight 61.07 ± 3.53 mg than those fed with other food types. Biochemical studies showed higher level of protein, carbohydrate, and lipid content in Catla fry fed with Cyclopoid diet. The results are discussed in the light of the literature available. It could be suggested that the Cyclopoid diet can be used as live feed for effective production of Catla fry.

  11. Status and threats on seagrass beds using GIS in Vietnam

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    Luong, Cao Van; Thao, Nguyen Van; Komatsu, Teruhisa; Ve, Nguyen Dac; Tien, Dam Duc

    2012-10-01

    Seagrasses, marine flowering plants, are widely distributed along temperate and tropical coastlines of the world. Seagrasses have key ecological roles in coastal ecosystems and can form extensive meadows supporting high biodiversity. Till now, fourteen seagrass species belonging to four families were found in Vietnam: Halophila beccarii, H. decipiens, H. ovalis, H. minor, Thalassia hemprichii, Enhalus acoroides, Ruppia maritima, Halodule pinifolia, H. uninervis, Syringodium isoetifolium, Cymadocea rotundata, C. serrulata and Thalassodendron ciliatum. A total area of seagrass beds in Vietnam is estimated to be approximately 17000 ha by satellite images and GIS technology. In recent years, the distribution areas and densities of seagrass beds in Vietnam have been serious decreased compared with those 10-15 years ago. The decline level depended on the impacts by the natural process, the economical activities and the conservation awareness of local people. Thus, it is different at each coastal area. Generally speaking, the distribution areas and densities of seagrass beds were decreased by more than 50%. Seagrasses on tidal flats in some areas such as Quang Ninh, Hai Phong, Phu Quoc seem to be nearly lost. The distribution areas of seagrass beds in 2009 at Tam Giang-Cau Hai lagoon and Cua Dai estuary was decreased by 50-70% of those in early 1990s.

  12. Diversity in the Globally Distributed Diatom Genus Chaetoceros (Bacillariophyceae: Three New Species from Warm-Temperate Waters.

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    Yang Li

    Full Text Available Chaetoceros is one of the most species rich, widespread and abundant diatom genera in marine and brackish habitats worldwide. It therefore forms an excellent model for in-depth biodiversity studies, assessing morphological and genetic differentiation among groups of strains. The global Chaetoceros lorenzianus complex presently comprises three species known to science. However, our recent studies have shown that the group includes several previously unknown species. In this article, 50 strains, mainly from high latitudes and from warm-temperate waters, were examined morphologically and genetically and the results compared with those of field studies from elsewhere. The strains clustered into five groups, two of which are formed by C. decipiens Cleve and C. mitra (Bailey Cleve, respectively. Their species descriptions are emended based on samples collected close to the type localities. The three other groups are formed by new species, C. elegans sp. nov., C. laevisporus sp. nov. and C. mannaii sp. nov. Characters used to distinguish each species are: orientation of setae, shape and size of the apertures, shape, size and density of the poroids on the setae and, at least in some species, characters of the resting spores. Our aim is to cover the global species diversity in this complex, as correct species delineation is the basis for exploring biodiversity, distribution of organisms, interactions in the food web and effects of environmental changes.

  13. Diversity in the Globally Distributed Diatom Genus Chaetoceros (Bacillariophyceae): Three New Species from Warm-Temperate Waters.

    Science.gov (United States)

    Li, Yang; Boonprakob, Atchaneey; Gaonkar, Chetan C; Kooistra, Wiebe H C F; Lange, Carina B; Hernández-Becerril, David; Chen, Zuoyi; Moestrup, Øjvind; Lundholm, Nina

    2017-01-01

    Chaetoceros is one of the most species rich, widespread and abundant diatom genera in marine and brackish habitats worldwide. It therefore forms an excellent model for in-depth biodiversity studies, assessing morphological and genetic differentiation among groups of strains. The global Chaetoceros lorenzianus complex presently comprises three species known to science. However, our recent studies have shown that the group includes several previously unknown species. In this article, 50 strains, mainly from high latitudes and from warm-temperate waters, were examined morphologically and genetically and the results compared with those of field studies from elsewhere. The strains clustered into five groups, two of which are formed by C. decipiens Cleve and C. mitra (Bailey) Cleve, respectively. Their species descriptions are emended based on samples collected close to the type localities. The three other groups are formed by new species, C. elegans sp. nov., C. laevisporus sp. nov. and C. mannaii sp. nov. Characters used to distinguish each species are: orientation of setae, shape and size of the apertures, shape, size and density of the poroids on the setae and, at least in some species, characters of the resting spores. Our aim is to cover the global species diversity in this complex, as correct species delineation is the basis for exploring biodiversity, distribution of organisms, interactions in the food web and effects of environmental changes.

  14. Actividad antibacteriana de extractos etanólicos de macroalgas marinas de la costa central del Perú

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    Claudio Magallanes

    2013-06-01

    Full Text Available Se evaluó la actividad antibacteriana de extractos etanólicos de 12 especies de macroalgas marinas. Los extractos fueron obtenidos de acuerdo al protocolo modificado de Vlachos et al. (1996. Cada extracto se enfrentó contra 5 cepas bacterianas de origen clínico y 6 no clínico perteneciente a los géneros Staphylococcus, Enterococcus, Pseudomonas, Escherichia, Salmonella, Aeromonas y Vibrio. De 12 especies de algas ensayadas solamente 5 (Grateloupia doryphora, Ahnfeltiopsis durvillaei, Prionitis decipiens, Petalonia fascia y Bryopsis plumosa presentaron algún efecto antibacteriano. Asimismo, de 11 cepas bacterianas probadas solamente las cepas clínicas Staphylococcus aureus ATCC 25923 y Enterococcus faecalis ATCC 29212 y la cepa no clínica Staphylococcus aureus ATCC 6633 fueron sensibles a los extractos algales. El extracto etanólico de B. plumosa presentó el mayor efecto antibacteriano contra las dos cepas de S. aureus, manifestándose en el mayor tamaño de sus halos de inhibición, mientras que el extracto de P. fascia mostró mayor espectro antibacteriano, inhibiendo a las 3 cepas mencionadas.

  15. Amino Sugars Enhance the Competitiveness of Beneficial Commensals with Streptococcus mutans through Multiple Mechanisms.

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    Zeng, Lin; Farivar, Tanaz; Burne, Robert A

    2016-06-15

    Biochemical and genetic aspects of the metabolism of the amino sugars N-acetylglucosamine (GlcNAc) and glucosamine (GlcN) by commensal oral streptococci and the effects of these sugars on interspecies competition with the dental caries pathogen Streptococcus mutans were explored. Multiple S. mutans wild-type isolates displayed long lag phases when transferred from glucose-containing medium to medium with GlcNAc as the primary carbohydrate source, but commensal streptococci did not. Competition in liquid coculture or dual-species biofilms between S. mutans and Streptococcus gordonii showed that S. gordonii was particularly dominant when the primary carbohydrate was GlcN or GlcNAc. Transcriptional and enzymatic assays showed that the catabolic pathway for GlcNAc was less highly induced in S. mutans than in S. gordonii Exposure to H2O2, which is produced by S. gordonii and antagonizes the growth of S. mutans, led to reduced mRNA levels of nagA and nagB in S. mutans When the gene for the transcriptional regulatory NagR was deleted in S. gordonii, the strain produced constitutively high levels of nagA (GlcNAc-6-P deacetylase), nagB (GlcN-6-P deaminase), and glmS (GlcN-6-P synthase) mRNA. Similar to NagR of S. mutans (NagRSm), the S. gordonii NagR protein (NagRSg) could bind to consensus binding sites (dre) in the nagA, nagB, and glmS promoter regions of S. gordonii Notably, NagRSg binding was inhibited by GlcN-6-P, but G-6-P had no effect, unlike for NagRSm This study expands the understanding of amino sugar metabolism and NagR-dependent gene regulation in streptococci and highlights the potential for therapeutic applications of amino sugars to prevent dental caries. Amino sugars are abundant in the biosphere, so the relative efficiency of particular bacteria in a given microbiota to metabolize these sources of carbon and nitrogen might have a profound impact on the ecology of the community. Our investigation reveals that several oral commensal bacteria have a much

  16. Afrikaner Christianity and the concept of empire

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    Erna Oliver

    2010-03-01

    Full Text Available Not many Protestant countries in the world have been as influenced by faith as South Africa. Although South Africa was never officially a Christian country, politics, economic development, social life and the culture of the �rainbow nation� was either moulded on, or influenced by, the Calvinistic Christianity that came to the country along with the European merchants. The privileged position of Christianity ended in 1994 when South Africa became a neutral state with guaranteed religious freedom for all. Although more than 80 per cent of the population claim that they are Christians, it seems as if the word is not meant any more as a religion with a value system and moral obligations, but only as a convenient label. The reason behind the contrast between theory and practice must be investigated. One possible reason could be found in the traditional Afrikaans-speaking churches� participation of, and contribution to, the �empire� concept. The responsibility of the individual to practise his or her faith was taken over by the power of the state and church.Bokriste bja Maafrikanere le kgopolo ya mmu�o wo maatlaGa se dinaga t�e nt�i t�a Protestante mo lefaseng t�e di huedit�wego ke tumelo go swana le ka fao naga ya Afrika-Borwa e huedit�wego ke tumelo ka gona. Le ge Afrika-Borwa e sa ka ya ba naga ya Sekriste semmu�o, dipolitiki, tlhabollo ya t�a ekonomi, bophelo bja leago le set�o sa �set�haba sa molalatladi�, se ka ba se bopegile godimo ga, goba se huedit�we ke Bokriste bja Secalvine bjo bo tlilego le bagwebi ba Yuropa. Maemo a go phagama ao a bego a filwe tumelo ya Sekriste a fedile ka ngwaga wa 1994 ge Afrika-Borwa e eba naga ya kemelathoko ya go fa bohle tokologo ya bodumedi. Le ge diphesente t�a go feta 80 t�a set�haba di ipit�a Bakriste, go bonala nke lent�u leo ga le sa �omi�wa go hlalo�a tumelo ye e nago le meetlo le maitshwaro a it�eng a setho, eup�a le no �omi�wa e le seka sa go

  17. Fast Tomography Imaging System for Material Surface Based on Doublet-cylinder-lens in Intelligent OCT

    Directory of Open Access Journals (Sweden)

    Xu Shijun

    2017-01-01

    Full Text Available A fast lateral line-scan mode in OCT was investigated. The elimination of spherical aberration, the beam mode and the focus of doublet-cylinder-lens, were theoretically analyzed. The parameters and signal characteristics of the confocus microscopy system with doublet-cylinder-lens were analyzed and simulated. The relation between the transverse resolution and the numerical aperture and the depth of focus (DOF was discussed in the OCT. Our results show that the spherical aberration and the sine aberration are effectively eliminated in the doublet-cylinder-lens with K9-ZF2 glass. The beam is uniformly focused on the arc-sagitta-plane of cylinder lens, and the parallel interference pattern with axial symmetry is in favor of improving transverse resolution. The transverse resolution depends upon the numerical aperture and the DOF. The scanning velocity of doublet-cylinder-lens confocus microscopy system is 103 times faster than the traditional spot-scan, while the transverse resolution is 15μm and the constraints of aperture 50.8 mm. This advanced system will be valuable in real-time imaging to material surface.

  18. Construction of an end-cap module prototype for the ATLAS transition radiation tracker

    CERN Document Server

    Danielsson, H

    2000-01-01

    We have designed, built and tested an 8-plane module prototype for the end-cap of the ATLAS TRT (Transition Radiation Tracker). The overall mechanics as well as the detailed design of individual components are presented. The prototype contains over 6000 straw tubes with a diameter of 4 mm, filled with an active gas mixture of 70% Xe, 20% CF4 and 10% CO//2. Very tight requirements on radiation hardness (10 Mrad and 2 multiplied by l0**1**4 neutrons per cm**2) straw straightness (sagitta less than 300 m), wire positions and leak tightness put great demands upon design and assembly. In order to verify the design, the stability of the wire tension, straw straightness, high-voltage performance and total leak rate have been measured and the results are presented. Some examples of dedicated assembly tooling and testing procedures are also given. Finally, the results of the calculations and measurements of both mechanical behaviour and wire offset are presented. 6 Refs.

  19. A high current, short pulse electron source for wakefield accelerators

    Energy Technology Data Exchange (ETDEWEB)

    Ho, Ching-Hung.

    1992-01-01

    Design studies for the generation of a high current, short pulse electron source for the Argonne Wakefield Accelerator are presented. An L-band laser photocathode rf gun cavity is designed using the computer code URMEL to maximize the electric field on the cathode surface for fixed frequency and rf input power. A new technique using a curved incoming laser wavefront to minimize the space charge effect near the photocathode is studied. A preaccelerator with large iris to minimize wakefield effects is used to boost the drive beam to a useful energy of around 20 MeV for wakefield acceleration experiments. Focusing in the photocathode gun and the preaccelerator is accomplished with solenoids. Beam dynamics simulations throughout the preaccelerator are performed using particle simulation codes TBCI-SF and PARMELA. An example providing a useful set of operation parameters for the Argonne Wakefield Accelerator is given. The effects of the sagitta of the curved beam and laser amplitude and timing jitter effects are discussed. Measurement results of low rf power level bench tests and a high power test for the gun cavity are presented and discussed.

  20. Hydrodynamic control of mesozooplankton abundance and biomass in northern Svalbard waters (79-81°N)

    Science.gov (United States)

    Blachowiak-Samolyk, Katarzyna; Søreide, Janne E.; Kwasniewski, Slawek; Sundfjord, Arild; Hop, Haakon; Falk-Petersen, Stig; Nøst Hegseth, Else

    2008-10-01

    The spatial variation in mesozooplankton biomass, abundance and species composition in relation to oceanography was studied in different climatic regimes (warm Atlantic vs. cold Arctic) in northern Svalbard waters. Relationships between the zooplankton community and various environmental factors (salinity, temperature, sampling depth, bottom depth, sea-ice concentrations, algal biomass and bloom stage) were established using multivariate statistics. Our study demonstrated that variability in the physical environment around Svalbard had measurable effect on the pelagic ecosystem. Differences in bottom depth and temperature-salinity best explained more than 40% of the horizontal variability in mesozooplankton biomass (DM m -2) after adjusting for seasonal variability. Salinity and temperature also explained much (21% and 15%, respectively) of the variability in mesozooplankton vertical distribution (ind. m -3) in August. Algal bloom stage, chlorophyll- a biomass, and depth stratum accounted for additional 17% of the overall variability structuring vertical zooplankton distribution. Three main zooplankton communities were identified, including Atlantic species Fritillaria borealis, Oithona atlantica, Calanus finmarchicus, Themisto abyssorum and Aglantha digitale; Arctic species Calanus glacialis, Gammarus wilkitzkii, Mertensia ovum and Sagitta elegans; and deeper-water inhabitants Paraeuchaeta spp., Spinocalanus spp., Aetideopsis minor, Mormonilla minor, Scolecithricella minor, Gaetanus ( Gaidius) tenuispinus, Ostracoda, Scaphocalanus brevicornis and Triconia borealis. Zooplankton biomasses in Atlantic- and Arctic-dominated water masses were similar, but biological "hot-spots" were associated with Arctic communities.

  1. Age and growth of the white croaker Micropogonias furnieri (Perciformes: Sciaenidae in a coastal area of Southeastern Brazilian Bight

    Directory of Open Access Journals (Sweden)

    Rosa S. Santos

    2017-04-01

    Full Text Available ABSTRACT Studies on age and growth of fish populations have direct application in fisheries and contribute for policies of conservation. Our aim was update information on the Micropogonias furnieri growth parameters based on sagittae otoliths annulis readings, and we expected that the studied population from Southeast Brazil can reach more longevity than the reported in the available literature. We examined 286 individuals between August-2010 and July-2011 from Ubatuba Bay, SP. The Total Length ranged 200-480 mm. The determined growth parameters were: Males, L∞ =523.4mm, k = 0.05×year-1, t0 = -8.78 year; Females L∞ = 573.5mm, k = 0.06 × year-1, t0 = -7.49 year. The MI and % of edge type evidenced the formation of one ring per year during autumn/winter, coinciding with low temperature and low growth rate. These results differed from those reported for the Vazzoler’s Population I (summer, and we detected higher longevity (45-48 years as compared with the recorded in the available information.

  2. Argentine anchovy (Engraulis anchoita stock identification and incipient exploitation in southern Brazil

    Directory of Open Access Journals (Sweden)

    Felipe M Carvalho

    2013-11-01

    Full Text Available The Argentine anchovy (Engraulis anchoita is an essential species in the pelagic ecosystem of the southwest Atlantic Ocean, and a potentially important fishery resource. Exploitation has recently started in southern Brazil, so it requires a better understanding of their structure and population dynamics. This work aims to update the information on the population identification of E. anchoita. Parameters such as age and size composition, length-at-age data and other parameters using sagittae otoliths were used to compare anchovy of the continental shelf between 20° and 32°S. The results indicate the existence of different populations in the southeastern and southern regions of Brazil: the bonaerense stock in southern Brazil is shared with Argentina and Uruguay and exhibits migratory behavior, while in the southeast there is a population confined to this region and shows different population characteristics. This has implications for the management of this species and should be taken into account by the institutions responsible for the assessment and management of fisheries in Brazil.

  3. Use of otolith strontium:calcium and zinc:calcium ratios as an indicator of the habitat of Percophis brasiliensis Quoy & Gaimard, 1825 in the southwestern Atlantic Ocean

    Directory of Open Access Journals (Sweden)

    Esteban Avigliano

    Full Text Available We evaluate the simultaneous use of Sr: Ca and Zn: Ca ratios of the sagitta otolith as a potential indicator of the habitat of Percophis brasiliensis along a latitudinal gradient in the southwestern Atlantic Ocean (34-42ºS and 51-67ºW, in order to reliably identify fish stocks. Fish were collected in three sampling sites: Argentine-Uruguayan Common Fishing Zone (AUCFZ, El Rincón (ER and San Matías Gulf (SMG. The otolith Sr:Ca and Zn:Ca ratios were determined by ICP-OES and EDTA volumetric method. The otolith Sr:Ca ratio was similar in the three sampling sites, while the Zn:Ca ratio was significantly higher in AUCFZ than in ER and SMG for all age groups. The discriminant analysis showed an association between the otolith Sr:Ca and Zn:Ca ratios from ER and SMG. Present results suggest the potential occurrence of two fish stocks of P. brasiliensis in the study area.

  4. 2D Geometry Predicts Perceived Visual Curvature in Context-Free Viewing

    Directory of Open Access Journals (Sweden)

    Birgitta Dresp-Langley

    2015-01-01

    Full Text Available Planar geometry was exploited for the computation of symmetric visual curves in the image plane, with consistent variations in local parameters such as sagitta, chordlength, and the curves’ height-to-width ratio, an indicator of the visual area covered by the curve, also called aspect ratio. Image representations of single curves (no local image context were presented to human observers to measure their visual sensation of curvature magnitude elicited by a given curve. Nonlinear regression analysis was performed on both the individual and the average data using two types of model: (1 a power function where y (sensation tends towards infinity as a function of x (stimulus input, most frequently used to model sensory scaling data for sensory continua, and (2 an “exponential rise to maximum” function, which converges towards an asymptotically stable level of y as a function of x. Both models provide satisfactory fits to subjective curvature magnitude as a function of the height-to-width ratio of single curves. The findings are consistent with an in-built sensitivity of the human visual system to local curve geometry, a potentially essential ground condition for the perception of concave and convex objects in the real world.

  5. Accurate transfer maps for realistic beam-line elements: Straight elements

    Directory of Open Access Journals (Sweden)

    Chad E. Mitchell

    2010-06-01

    Full Text Available The behavior of orbits in charged-particle beam transport systems, including both linear and circular accelerators as well as final focus sections and spectrometers, can depend sensitively on nonlinear fringe-field and high-order-multipole effects in the various beam-line elements. The inclusion of these effects requires a detailed and realistic model of the interior and fringe fields, including their high spatial derivatives. A collection of surface fitting methods has been developed for extracting this information accurately from three-dimensional field data on a grid, as provided by various three-dimensional finite-element field codes. Based on these realistic field models, Lie or other methods may be used to compute accurate design orbits and accurate transfer maps about these orbits. Part I of this work presents a treatment of straight-axis magnetic elements, while part II will treat bending dipoles with large sagitta. An exactly soluble but numerically challenging model field is used to provide a rigorous collection of performance benchmarks.

  6. Momentum scale in the HARP TPC

    CERN Document Server

    Catanesi, M G; Edgecock, R; Ellis, M; Soler, F J P; Gössling, C; Bunyatov, S; Krasnoperov, A; Popov, B; Serdiouk, V; Tereschenko, V; Di Capua, E; Vidal-Sitjes, G; Artamonov, A; Giani, S; Gilardoni, S; Gorbunov, P; Grant, A; Grossheim, A; Ivanchenko, V; Kayis-Topaksu, A; Panman, J; Papadopoulos, I; Chernyaev, E; Tsukerman, I; Veenhof, R; Wiebusch, C; Zucchelli, P; Blondel, A; Borghi, S; Morone, M C; Prior, G; Schroeter, R; Meurer, C; Gastaldi, Ugo; Mills, G B; Graulich, J S; Grégoire, G; Bonesini, M; Ferri, F; Kirsanov, M; Bagulya, A; Grichine, V; Polukhina, N; Palladino, V; Coney, L; Schmitz, D; Barr, G; De Santo, A; Bobisut, F; Gibin, D; Guglielmi, A; Mezzetto, M; Dumarchez, J; Dore, U; Orestano, D; Pastore, F; Tonazzo, A; Tortora, L; Booth, C; Howlett, L; Bogomilov, M; Chizhov, M; Kolev, D; Tsenov, R; Piperov, S; Temnikov, P; Apollonio, M; Chimenti, P; Giannini, G; Burguet-Castell, J; Cervera-Villanueva, A; Gómez-Cadenas, J J; Martín-Albo, J; Novella, P; Sorel, M

    2007-01-01

    Recently a claim was made that the reconstruction of the large angle tracks in the HARP TPC was affected by a momentum bias as large as 15% at 500 MeV/c transverse momentum. In the following we recall the main issues with the momentum measurement in the HARP TPC, and describe the cross-checks made to validate the momentum scale. Proton-proton elastic scattering data off the hydrogen target are used to alibrate the momentum of charged particles with a precision evaluated to be 3.5%. A full description of the time development of the dynamic distortions in the TPC during physics spills is now available together with a correction algorithm. This allows a new cross-check using an enlarged data set made by comparing positive and negative pion elasticscattering data collected with negative polarity of the solenoid magnet. These data confirm the absence of a bias in the sagitta measurement. The dE/dx versus momentum curves are revisited, and shown to provide a confirmation that the HARP momentum calibration is correc...

  7. Upgrade of the ATLAS Monitored Drift Tube Frontend Electronics for the HL-LHC

    CERN Document Server

    Zhu, Junjie; The ATLAS collaboration

    2017-01-01

    The ATLAS monitored drift tube (MDT) chambers are the main component of the precision tracking system in the ATLAS muon spectrometer. The MDT system is capable of measuring the sagitta of muon tracks to an accuracy of 60 μm, which corresponds to a momentum accuracy of about 10% at pT=1 TeV. To cope with large amount of data and high event rate expected from the High-Luminosity LHC (HL-LHC) upgrade, ATLAS plans to use the MDT detector at the first-trigger level to improve the muon transverse momentum resolution and reduce the trigger rate. The new MDT trigger and readout system will have an output event rate of 1 MHz and a latency of 6 us at the first-level trigger. The signals from MDT tubes are first processed by an Amplifier/Shaper/Discriminator (ASD) ASIC, and the binary differential signals output by the ASDs are then router to the Time-to-Digital Converter (TDC) ASIC, where the arrival times of leading and trailing edges are digitized in a time bin of 0.78 ns which leads to an RMS timing error of 0.25 n...

  8. Real-time tracking with a 3D-Flow processor array

    International Nuclear Information System (INIS)

    Crosetto, D.

    1993-06-01

    The problem of real-time track-finding has been performed to date with CAM (Content Addressable Memories) or with fast coincidence logic, because the processing scheme was thought to have much slower performance. Advances in technology together with a new architectural approach make it feasible to also explore the computing technique for real-time track finding thus giving the advantages of implementing algorithms that can find more parameters such as calculate the sagitta, curvature, pt, etc., with respect to the CAM approach. The report describes real-time track finding using new computing approach technique based on the 3D-Flow array processor system. This system consists of a fixed interconnection architecture scheme, allowing flexible algorithm implementation on a scalable platform. The 3D-Flow parallel processing system for track finding is scalable in size and performance by either increasing the number of processors, or increasing the speed or else the number of pipelined stages. The present article describes the conceptual idea and the design stage of the project

  9. Real-time tracking with a 3D-flow processor array

    International Nuclear Information System (INIS)

    Crosetto, D.

    1993-01-01

    The problem of real-time track-finding has been performed to date with CAM (Content Addressable Memories) or with fast coincidence logic, because the processing scheme was though to have much slower performance. Advances in technology together with a new architectural approach make it feasible to also explore the computing technique for real-time track finding thus giving the advantages of implementing algorithms that can find more parameters such as calculate the sagitta, curvature, pt, etc. with respect to the CAM approach. This report describes real-time track finding using a new computing approach technique based on the 3D-flow array processor system. This system consists of a fixed interconnection architexture scheme, allowing flexible algorithm implementation on a scalable platform. The 3D-Flow parallel processing system for track finding is scalable in size and performance by either increasing the number of processors, or increasing the speed or else the number of pipelined stages. The present article describes the conceptual idea and the design stage of the project

  10. Models describing mackerel (Scomber scombrus early life growth in the North and Northwest of the Iberian Peninsula in 2000

    Directory of Open Access Journals (Sweden)

    Begoña Villamor

    2004-12-01

    Full Text Available Mackerel (Scomber scombrus in early life stages were captured in 2000 in the north and northwest of the Iberian Peninsula (ICES Divisions VIIIc and IXa North. Daily rings on their otolith sagittae were identified. Otoliths from 377 larvae and post-larvae caught in April and May 2000, ranging in length from 2.3 to 23.7 mm LS (Standard length and ranging in age from 7 to 38 days after hatching were analysed. Additionally, 68 otoliths from juveniles and pre-recruits caught between July and October 2000 with a length range of 121-202 mm LS and aged between 65-186 days after hatching were analysed. Gompertz and Logistic growth models were fitted to the pooled length at age data of the larvae-postlarvae and juveniles-pre-recruits. As length at hatch is assumed in the literature to be 3.0 mm, the models were applied in two ways; not forced to pass through L0=3.0 mm and forced to pass through L0=3.0 mm. The unforced logistic growth curve appeared to be the most suitable for describing growth during the first year of life of mackerel (L? = 191.6 mm; K= 0.070; t0= 66.7 d.

  11. Effects of extreme habitat conditions on otolith morphology: a case study on extremophile live bearing fishes (Poecilia mexicana, P. sulphuraria).

    Science.gov (United States)

    Schulz-Mirbach, Tanja; Riesch, Rüdiger; García de León, Francisco J; Plath, Martin

    2011-12-01

    Our study was designed to evaluate if, and to what extent, restrictive environmental conditions affect otolith morphology. As a model, we chose two extremophile livebearing fishes: (i) Poecilia mexicana, a widespread species in various Mexican freshwater habitats, with locally adapted populations thriving in habitats characterized by the presence of one (or both) of the natural stressors hydrogen sulphide and darkness, and (ii) the closely related Poecilia sulphuraria living in a highly sulphidic habitat (Baños del Azufre). All three otolith types (lapilli, sagittae, and asterisci) of P. mexicana showed a decrease in size ranging from the non-sulphidic cave habitat (Cueva Luna Azufre), to non-sulphidic surface habitats, to the sulphidic cave (Cueva del Azufre), to sulphidic surface habitats (El Azufre), to P. sulphuraria. Although we found a distinct differentiation between ecotypes with respect to their otolith morphology, no clear-cut pattern of trait evolution along the two ecological gradients was discernible. Otoliths from extremophiles captured in the wild revealed only slight similarities to aberrant otoliths found in captive-bred fish. We therefore hypothesize that extremophile fishes have developed coping mechanisms enabling them to avoid aberrant otolith growth - an otherwise common phenomenon in fishes reared under stressful conditions. Copyright © 2011 Elsevier GmbH. All rights reserved.

  12. Otolith shape lends support to the sensory drive hypothesis in rockfishes.

    Science.gov (United States)

    Tuset, V M; Otero-Ferrer, J L; Gómez-Zurita, J; Venerus, L A; Stransky, C; Imondi, R; Orlov, A M; Ye, Z; Santschi, L; Afanasiev, P K; Zhuang, L; Farré, M; Love, M S; Lombarte, A

    2016-10-01

    The sensory drive hypothesis proposes that environmental factors affect both signalling dynamics and the evolution of signals and receivers. Sound detection and equilibrium in marine fishes are senses dependent on the sagittae otoliths, whose morphological variability appears intrinsically linked to the environment. The aim of this study was to understand if and which environmental factors could be conditioning the evolution of this sensory structure, therefore lending support to the sensory drive hypothesis. Thus, we analysed the otolith shape of 42 rockfish species (Sebastes spp.) to test the potential associations with the phylogeny, biological (age), ecological (feeding habit and depth distribution) and biogeographical factors. The results showed strong differences in the otolith shapes of some species, noticeably influenced by ecological and biogeographical factors. Moreover, otolith shape was clearly conditioned by phylogeny, but with a strong environmental effect, cautioning about the use of this structure for the systematics of rockfishes or other marine fishes. However, our most relevant finding is that the data supported the sensory drive hypothesis as a force promoting the radiation of the genus Sebastes. This hypothesis holds that adaptive divergence in communication has significant influence relative to other life history traits. It has already been established in Sebastes for visual characters and organs; our results showed that it applies to otolith transformations as well (despite the clear influence of feeding and depth), expanding the scope of the hypothesis to other sensory structures. © 2016 European Society For Evolutionary Biology. Journal of Evolutionary Biology © 2016 European Society For Evolutionary Biology.

  13. Otolith marking of juvenile shortnose gar by immersion in oxytetracycline

    Science.gov (United States)

    Snow, Richard A.; Long, James M.

    2017-01-01

    Oxytetracycline (OTC) has been used to mark a variety of fish species at multiple developmental stages; however, there is little information on batch-marking Lepisosteidae. Juvenile Shortnose Gar Lepisosteus platostomus (53 ± 3 mm TL) were seined from an Oklahoma State University research pond and transported to the Oklahoma Fishery Research Lab. Juvenile Shortnose Gar were exposed to a range of OTC concentrations—0, 500, 600, and 700 mg/L—for 4, 5, or 6 h. Lapillus and sagitta otoliths were examined 14 d postexposure for mark presence and evaluation using fluorescent microscopy. Overall, 93.3% of otoliths exposed to OTC exhibited a mark. Concentration of OTC affected the mean mark quality, whereas duration and otolith type examined did not. However, as concentration increased, so did mortality, suggesting a balance is needed to achieve marking goals. Based on our findings, batch marking of Shortnose Gar can be successful at OTC concentrations from 500 to 700 mg/L for 4–6 h, although mark quality may vary and mortality rates increase at the higher concentrations and longer durations.

  14. Otolith morphology and body size relationships for juvenile Sciaenidae in the Río de la Plata estuary (35-36°S

    Directory of Open Access Journals (Sweden)

    Juan A. Waessle

    2003-06-01

    Full Text Available Seven species of the family Sciaenidae have been reported inhabiting bottom waters of the Río de la Plata estuary. Of these juvenile stripped weakfish (Cynoscion guatucupa, king weakfish (Macrodon ancylodon, whitemouth croaker (Micropogonias furnieri and banded ground drum (Paralonchurus brasiliensis are by far the most abundant. These species are also important prey of several top-predator species among large fishes, seabirds and mammals. In this study we provide new information regarding otolith morphology and body size relationships of juvenile sciaenid fish. The sagittae morphology of juvenile sciaenids showed strong changes in the course of their development (e.g. in overall shape and development of concrescences on the outer surface. Analysing the morphometric relationships, we concluded that otolith length and otolith mass are good indicators of fish standard length and fish weight in all species. If otolith length or mass is used to estimate fish length, the regression explained more than 97% of the variation in all species. All equations relating fish standard length and fish weight for juvenile stages of the species studied explained a very large proportion of the variance in the data. These data will help researchers studying food habits of top predators to determine size and weight of usually juvenile fish-prey from length, broad and/or weight of recovered otoliths.

  15. Transport of marine fish larvae to Saroma-ko Lagoon (Hokkaido, Japan) in relation to the availability of zooplankton prey under the winter ice cover

    Science.gov (United States)

    Fortier, Martin; Fortier, Louis

    1997-02-01

    To assess the importance of ice-covered Saroma-ko Lagoon as a winter nursery area for young fish spawned offshore, we monitored the recruitment of marine fish larvae from the Sea of Okhotsk to the lagoon as well as the availability of larval fish prey under the ice cover from 24 February to 23 March 1992. Sand lance ( Ammodytes sp.) and walleye pollock ( Theragra chalcogramma) larvae recruited to the lagoon on flood tide whereas snake prickleback ( Lumpenus sagitta) larvae were exported to the Sea of Okhotsk on ebb. Before the ice breakup, ice microalgae made up the bulk of the microalgal biomass in the lagoon. The production and release of ice algae did not trigger the maturation of the late copepodite stages of copepods, and the proportion of adult females in the copepod assemblage remained low. The production of copepod nauplii (the main prey of fish larvae) under the ice was probably insufficient to insure suitable feeding and growth of fish larvae entering the lagoon in winter. Sand lance larvae, the most abundant species to colonize the lagoon in February-March, had to survive for nearly two months at low food abundance. Based on our results, the importance of Saroma-ko Lagoon as a winter nursery area for fish larvae appears negligible.

  16. Influence of spring river flow on the recruitment of Japanese seaperch Lateolabrax japonicus into the Chikugo estuary, Japan

    Directory of Open Access Journals (Sweden)

    Jun Shoji

    2006-10-01

    Full Text Available The estuarine turbidity maximum (ETM zone is considered to serve as a predation refuge for fish during the early life stages due to the high turbidity and high prey concentration. River flow can be one of the important determinants for survival of early life stages of estuarine dependent fish because it affects both the physical and biological properties of the ETM. We tested the hypothesis that fluctuation of river flow explains the variability in recruitment of Japanese seaperch Lateolabrax japonicus around the ETM region of the Chikugo River estuary, upper Ariake Bay, Japan. Japanese seaperch recruitment showed a 43.3-fold fluctuation from 1990 to 2000 and was inversely correlated with the mean daily river flow of the Chikugo River in March. The recruitment was high and variable in years of low March river flow and was poor in years of high March river flow. We conclude that high river flow potentially decreases Japanese seaperch recruitment in the Chikugo River estuary by blocking the larval migration into the river and by increasing the probability of larval dispersion to the downriver/upper bay areas, where potential predators (jellyfish and Sagitta spp. were more abundant, and prey (Sinocalanus sinensis availability and turbidity were lower.

  17. The biology and ecology of juvenile pilotfish (Naucrates ductor associated with Fish Aggregating Devices (FADs in eastern Mediterranean waters

    Directory of Open Access Journals (Sweden)

    V. VASSILOPOULOU

    2005-06-01

    Full Text Available The pilotfish (Naucrates ductor is an epipelagic oceanic species, whose 0-group specimens tend to aggregate below flotsam, constituting a principal by-catch of the western Mediterranean FAD fishery. During a one-year survey sampling, monthly experimental hauls using surrounding nets were conducted at sites in south Peloponnesian waters, where FADs were moored; during the summer-early autumn months bongo tows were also carried out. 0-group pilotfish appeared beneath FADs from mid-summer till early winter and the total length of the collected specimens ranged between 120 and 330 mm. Pilotfish larvae, measuring 2.0- 3.9 mm, were found at FAD sites in mid-summer and in early autumn. The age of juvenile specimens, determined by counting daily increments on their sagittae, ranged between 50-141 increments (days for males, and 51-131 increments (days for females. The predicted asymptotic length was found to be 412.3mm TL for males and 435.2 mm TL for females. The onset of sexual maturity appeared to occur when specimens were a few months old. Stomach content analysis suggested that the diet of 0-group pilotfish associated to FADs in Greek waters depended mainly on decapod larvae, hyperiid amphipods, and alciopid polychaetes.

  18. Age and growth of the southern blue whiting Micromesistius australis in the SW Atlantic

    Directory of Open Access Journals (Sweden)

    Maria Cristina Cassia

    2000-09-01

    Full Text Available Age and growth of southern blue whiting Micromesistius australis are studied. Sagitta otoliths from 3650 specimens were used for age determination. These were taken during research surveys and commercial catches in the South West Atlantic during 1994 and 1995. The size of fishes ranged from 17 to 60 cm total length, corresponding to ages 0 to 23 years. Females attained a greater asymptotic length (L? 59.74 cm than males (L? 54.72 cm. Comparison of growth curves by the likelihood ratio showed that the differences among females and males were due to the asymptotic length, while the other parameters (K and t0 were not statistically different. The mean weight-at-age, mean length-at-age, and total mortality (Z were estimated. Growth parameters estimated by sex in the period 1994-95, mean size per age group, and the number of individuals per age in the catches show differences with those calculated when the population was in the early stage of exploitation. A predominance of 2 to 9 year old individuals was observed in the total catches in 1994-1995, whereas in the beginning of the fisheries total catches were basically fish 15 to 19 years old.

  19. A high current, short pulse electron source for wakefield accelerators

    International Nuclear Information System (INIS)

    Ho, Ching-Hung.

    1992-01-01

    Design studies for the generation of a high current, short pulse electron source for the Argonne Wakefield Accelerator are presented. An L-band laser photocathode rf gun cavity is designed using the computer code URMEL to maximize the electric field on the cathode surface for fixed frequency and rf input power. A new technique using a curved incoming laser wavefront to minimize the space charge effect near the photocathode is studied. A preaccelerator with large iris to minimize wakefield effects is used to boost the drive beam to a useful energy of around 20 MeV for wakefield acceleration experiments. Focusing in the photocathode gun and the preaccelerator is accomplished with solenoids. Beam dynamics simulations throughout the preaccelerator are performed using particle simulation codes TBCI-SF and PARMELA. An example providing a useful set of operation parameters for the Argonne Wakefield Accelerator is given. The effects of the sagitta of the curved beam and laser amplitude and timing jitter effects are discussed. Measurement results of low rf power level bench tests and a high power test for the gun cavity are presented and discussed

  20. Chromosome mutagenesis in populations of aquatic biota in the Black Sea, Aegean Sea and Danube and Dnieper rivers, 1986-1989

    International Nuclear Information System (INIS)

    Tsytsugina, V.G.

    1991-01-01

    We studied the level of structural mutagenesis in the reproductive and somatic cells of aquatic biota of various taxa from natural populations of neustic and benthic communities in the Black and Aegean Seas and the Dnieper and Danube rivers between 1986 and 1989. The cytogenetic research covered embryos, larvae and adult worms of Nereidae, Naididae, Tubificidae and Turbellaria, adult Sagitta setosa, young Bivalvia molluscs, embryos of Mysidacea, and growing roe of Engraulis encrasicholus, Sprattus sprattus, Diplodus annularis, Mullus barbatus, Trachurus trachurus, Scophthalmus maeoticus, Abramis brama, Blicca bjoerkna, Rutilus rutilus and Stizostedion lucioperca. It was established that aquatic biota in the open waters of the Black and Aegean Seas had a lower level of chromosome mutagenesis than representatives of the fluvial communities. The intensity of mutagenesis was compared with the data published in the literature on radioactive contamination/chemical pollution of the aqueous medium in these areas. The paper sets out statistical regularities in chromosome mutagenesis (inter-individual variability in the chromosome aberration rate and distribution of chromosome damage in cells), noting different patterns of chromosome aberration distribution among cells. On the basis of a large quantity on our own data from field and experimental cytogenetic studies involving aquatic biota, the paper considers the possibility of using - for the purposes of radiochemical-ecological monitoring - chromosome damage distribution in cells as an indicator of whether mutagens are radiation-related or not. (author)

  1. The Alignment System of the ATLAS Muon End-Cap Spectrometer

    CERN Document Server

    Schricker, Alexander

    2002-01-01

    The Large Hadron Collider at CERN will offer an unparalleled opportunity to probe fundamental physics at an energy scale well beyond that reached by current experiments. The ATLAS detector is being designed to fully exploit the potential of the LHC for revealing new aspects of the fundamental structure of nature. The muon spectrometer itself must measure with a momentum resolution of s10% for muons with a transverse momentum of pT =1TeV, to fully exploit the advantages offered by the open superconducting air core muon toroid magnet system. At this level of momentum resolution the muon spectrometer relies heavily on the ability to master the alignment of the large muon chambers spaced far apart. The overall contribution of the alignment to the total sagitta error must be less than 30 μm r.m.s. In order to meet the stringent alignment requirements the positions of the muon chambers are constantly monitored with optical alignment technologies. The end-caps of this spectrometer are therefore embedded in an align...

  2. Population size structure, age and growth of Naucrates ductor in the small scale FADs fishery of Mallorca Island (western-Mediterranean

    Directory of Open Access Journals (Sweden)

    O. Reñones

    1999-12-01

    Full Text Available The pilotfish (Naucrates ductor is mainly caught as a by-catch of the dolphinfish fishery using FADs deployed around Mallorca (western-Mediterranean from the end of August to December. The age and growth parameters of this species were estimated by length frequency analysis and daily growth increments observed in the otoliths. To validate the daily formation of the ring observed in the sagittae otoliths, a marking otoliths experiment with SrCl2 was carried out with juvenile specimens kept in laboratory conditions. The growth parameters obtained from otolith interpretation were based on age at length of 99 specimens ranging between 15 and 31.2 cm FL. Length frequency analyses were based on the monthly length distribution obtained in 1990, 1991, 1995 and 1996. The results obtained from the two methods were similar and showed rapid growth during the first 6 months of life. The von Bertalanffy growth equation from otoliths was FL= 28.97 (1-e (-6.87(t - 0.055. Positive allometric growth was observed in the length-weight relationship, with no differences existing between sexes: W (g= 0.0147*FL3.040 (cm.

  3. Early Cretaceous wedge extrusion in the Indo-Burma Range accretionary complex: implications for the Mesozoic subduction of Neotethys in SE Asia

    Science.gov (United States)

    Zhang, Ji'en; Xiao, Wenjiao; Windley, Brian F.; Cai, Fulong; Sein, Kyaing; Naing, Soe

    2017-06-01

    The Indo-Burma Range (IBR) of Myanmar, the eastern extension of the Yarlung-Tsangpo Neotethyan belt of Tibet in China, contains mélanges with serpentinite, greenschist facies basalt, chert, sericite schist, silty slate and unmetamorphosed Triassic sandstone, mudstone and siltstone interbedded with chert in the east, and farther north high-pressure blueschist and eclogite blocks in the Naga Hills mélange. Our detailed mapping of the Mindat and Magwe sections in the middle IBR revealed a major 18 km antiformal isocline in a mélange in which greenschist facies rocks in the core decrease in grade eastwards and westwards symmetrically `outwards' to lower grade sericite schist and silty slate, and at the margins to unmetamorphosed sediments, and these metamorphic rocks are structurally repeated in small-scale imbricated thrust stacks. In the Mindat section the lower western boundary of the isoclinal mélange is a thrust on which the metamorphic rocks have been transported over unmetamorphosed sediments of the Triassic Pane Chaung Group, and the upper eastern boundary is a normal fault. These relations demonstrate that the IBR metamorphic rocks were exhumed by wedge extrusion in a subduction-generated accretionary complex. Along strike to the north in the Naga Hills is a comparable isoclinal mélange in which central eclogite lenses are succeeded `outwards' by layers of glaucophane schist and glaucophanite, and to lower grade greenschist facies sericite schist and slate towards the margins. In the Natchaung area (from west to east) unmetamorphosed Triassic sediments overlie quartzites, sericite schists, actinolite schists and meta-volcanic amphibolites derived from MORB-type basalt, which are in fault contact with peridotite. Olivine in the peridotite has undulatory extinction suggesting deformation at 600-700 °C, similar to the peak temperature of the amphibolite; these relations suggest generation in a metamorphic sole. The amphibolites have U/Pb zircon ages of 119

  4. Genomic analysis and initial characterization of the chitinolytic system of Microbulbifer degradans strain 2-40.

    Science.gov (United States)

    Howard, Michael B; Ekborg, Nathan A; Taylor, Larry E; Weiner, Ronald M; Hutcheson, Steven W

    2003-06-01

    The marine bacterium Microbulbifer degradans strain 2-40 produces at least 10 enzyme systems for degrading insoluble complex polysaccharides (ICP). The draft sequence of the 2-40 genome allowed a genome-wide analysis of the chitinolytic system of strain 2-40. The chitinolytic system includes three secreted chitin depolymerases (ChiA, ChiB, and ChiC), a secreted chitin-binding protein (CbpA), periplasmic chitooligosaccharide-modifying enzymes, putative sugar transporters, and a cluster of genes encoding cytoplasmic proteins involved in N-acetyl-D-glucosamine (GlcNAc) metabolism. Each chitin depolymerase was detected in culture supernatants of chitin-grown strain 2-40 and was active against chitin and glycol chitin. The chitin depolymerases also had a specific pattern of activity toward the chitin analogs 4-methylumbelliferyl-beta-D-N,N'-diacetylchitobioside (MUF-diNAG) and 4-methylumbelliferyl-beta-D-N,N',N"-triacetylchitotrioside (MUF-triNAG). The depolymerases were modular in nature and contained glycosyl hydrolase family 18 domains, chitin-binding domains, and polycystic kidney disease domains. ChiA and ChiB each possessed polyserine linkers of up to 32 consecutive serine residues. In addition, ChiB and CbpA contained glutamic acid-rich domains. At 1,271 amino acids, ChiB is the largest bacterial chitinase reported to date. A chitodextrinase (CdxA) with activity against chitooligosaccharides (degree of polymerization of 5 to 7) was identified. The activities of two apparent periplasmic (HexA and HexB) N-acetyl-beta-D-glucosaminidases and one cytoplasmic (HexC) N-acetyl-beta-D-glucosaminidase were demonstrated. Genes involved in GlcNAc metabolism, similar to those of the Escherichia coli K-12 NAG utilization operon, were identified. NagA from strain 2-40, a GlcNAc deacetylase, was shown to complement a nagA mutation in E. coli K-12. Except for the GlcNAc utilization cluster, genes for all other components of the chitinolytic system were dispersed throughout the

  5. Variación de la diversidad y abundancia de especies ícticas dominantes en el Delta del Río Magdalena, Colombia

    Directory of Open Access Journals (Sweden)

    Claudia Sánchez Ramírez

    1999-12-01

    Full Text Available La comunidad íctica del Delta del Río Magdalena, Colombia fue estudiada con el fin de tener un conocimiento de su relación con los hábitats ocupados y generar así información complementaria para programas de evaluación y manejo de recursos pesqueros. Entre 1995 y 1996 se hicieron recolectas mensuales de peces usando atarrayas, en la Ciénaga Grande de Santa Marta (CGSM, el Complejo Pajarales (CP y el Complejo Salamanca Occidental (CSO. 36 especies utilizan la CGSM, 24 el CP y 42 el CSO, siendo 11 especies comunes en las tres áreas. La abundancia y la captura por unidad de esfuerzo fueron mayores en época lluviosa, cuando la disponibilidad de alimento fue mayor. La diversidad varió a lo largo del período de estudio y fue mayor en CSO donde las condiciones ambientales fueron mejores. La geomorfología del Delta y las condiciones ambientales generan que las especies utilicen los hábitats en forma diferente. Se determinó que las especies dominantes han adaptado su ciclo de vida a un patrón anual de salinidad cambiante para cumplir funciones de reproducción, crianza y alimentación.The fish community in the Magdalena River Delta, Colombia, was studied to assess relationship with habitats and to generate additional information for resource evaluation and management programs. Monthly castnets fish collections (1995 - 1996 were made in Ciénaga Grande de Santa Marta (CGSM, Complejo Pajaral (CP and Complejo Salamanca Occidental (CSO, all in the Magdalena River Delta; 36 species are present in CGSM, 24 in CP and 42 in CSO, with 11 species common to the three areas. Abundance and catch-per-unit effort were greater in the rainy season, when food availability was greater. The diversity varied during the study period and was higher in CSO where the environmental conditions were better. The geomorphology and environmental conditions determine the habitat adaptation of the species in the Delta. The dominant species have adapted their spawning

  6. Algunas experiencias en el uso de índices limnológicos en Colombia

    Directory of Open Access Journals (Sweden)

    Gabriel Antonio Pinilla Agudelo

    2016-02-01

    Full Text Available El objetivo central de este trabajo es mostrar algunas experiencias del Departamento de Biología de la Universidad Nacional de Colombia en la elaboración de índices limnológicos para evaluar el estado ecológico de sistemas acuáticos colombianos. Se presentan siete casos que van desde la construcción de un índice multimétrico para los humedales bogotanos, hasta el desarrollo de un método de biomonitoreo del estado trófico basado en microalgas encapsuladas en alginato. Los índices expuestos fueron realizados por docentes y estudiantes de pregrado y posgrado de Biología y consideran tanto variables físicas y químicas como características bióticas de los ambientes limnológicos analizados. Las comunidades acuáticas trabajadas fueron el fitoplancton, el perifiton, las plantas acuáticas y los invertebrados acuáticos. Los índices propuestos (Índice de Condiciones Limnológicas de los humedales de Bogotá – ICOL; Índice de Diatomeas Perifíticas de los humedales de Bogotá – IDPHB; Índice de Integridad Biótica de Macroinvertebrados en ciénagas del Cesar– IIBM; Índice de Estado Limnológico para ciénagas del Canal del Dique – IEL; Índice de Estado Limnológico Fluvial para ríos de la cuenca alta del río Chicamocha– IELf; Índice de Integridad del Hábitat para ríos licenciados - IIH permiten establecer escalas de calidad y funcionalidad de los ecosistemas estudiados. Las algas encapsuladas, por su parte, reflejan a través de sus tasas de crecimiento la condición trófica del agua. De esta manera se ponen a disposición de las autoridades ambientales una serie de herramientas técnicas y científicas que permiten tomar decisiones sobre el uso, restauración y conservación de los ambientes acuáticos continentales del país.

  7. The Clavibacter michiganensis subsp. michiganensis-tomato interactome reveals the perception of pathogen by the host and suggests mechanisms of infection

    Energy Technology Data Exchange (ETDEWEB)

    Savidor, Alon [Tel Aviv University; Teper, [Tel Aviv University; Gartemann, KH [Tel Aviv University; Eichenlaub, R [Tel Aviv University; Chalupowicz, L [Tel Aviv University; Manulis-Sasson, S [Tel Aviv University; Barash, I [Tel Aviv University; Tews, H [Tel Aviv University; Mayer, K [Tel Aviv University; Giannone, Richard J [ORNL; Hettich, Robert {Bob} L [ORNL; Sessa, G [Tel Aviv University

    2012-01-01

    The Gram-positive bacterium Clavibacter michiganensis subsp. michiganensis (Cmm) causes wilt and canker disease of tomato (Solanum lycopersicum). Mechanisms of Cmm pathogenicity and tomato response to Cmm infection are not well understood. To explore the interaction between Cmm and tomato, multidimensional protein identification technology (MudPIT) and tandem mass spectrometry were used to analyze in vitro and in planta generated samples. The results show that during infection Cmm senses the plant environment, transmits signals, induces, and then secretes multiple hydrolytic enzymes, including serine proteases of the Pat-1, Ppa, and Sbt familes, the CelA, XysA, and NagA glycosyl hydrolases, and other cell wall-degrading enzymes. Tomato induction of pathogenesis-related (PR) proteins, LOX1, and other defense-related proteins during infection indicates that the plant senses the invading bacterium and mounts a basal defense response, although partial with some suppressed components including class III peroxidases and a secreted serine peptidase. The tomato ethylene-synthesizing enzyme ACC-oxidase was induced during infection with the wild-type Cmm but not during infection with an endophytic Cmm strain, identifying Cmm-triggered host synthesis of ethylene as an important factor in disease symptom development. The proteomic data were also used to improve Cmm genome annotation, and thousands of Cmm gene models were confirmed or expanded.

  8. Grape and wine amino acid composition from Carignan noir grapevines growing under rainfed conditions in the Maule Valley, Chile: Effects of location and rootstock.

    Science.gov (United States)

    Gutiérrez-Gamboa, G; Carrasco-Quiroz, M; Martínez-Gil, A M; Pérez-Álvarez, E P; Garde-Cerdán, T; Moreno-Simunovic, Y

    2018-03-01

    Nitrogen compounds play a key role on grape and wine quality. Their composition in grapes depends mainly on variety, viticultural management, and terroir, and affects fermentation kinetics and the volatile compound formation. The aim of this work was to study grape and wine amino acid composition of ungrafted or grafted onto cv. País Carignan grapevines growing under rainfed conditions in ten sites of the Maule Valley (Chile). The results showed that proline was the most abundant amino acid in grapes and wines. In general, Carignan noir grapevines grafted over País showed lower grape amino acid content respect to ungrafted vines. Cool night index (CI) was inversely correlated to several amino acids, showing that their plant synthesis or accumulation increased with lower minimum temperatures during the last month before harvest. Truquilemu (Tru) and Ciénaga de Name (Cdn) sites showed the highest concentration for several amino acids and total amino acid content in grapes, which led to a faster alcoholic fermentation. Copyright © 2017. Published by Elsevier Ltd.

  9. Seismicity and tectonics of Bangladesh

    International Nuclear Information System (INIS)

    Hossain, K.M.

    1989-05-01

    Northern and eastern Bangladesh and surrounding areas belong to a seismically active zone and are associated with the subduction of the Indian plate. The seismicity and tectonics have been studied in detail and the observations have been correlated to understand the earthquake phenomenon in the region. The morphotectonic behaviour of northern Bangladesh shows that it is deeply related to the movement of the Dauki fault system and relative upliftment of the Shillong plateau. Contemporary seismicity in the Dauki fault system is relatively quiet comparing to that in the Naga-Disang-Haflong thrust belt giving rise to the probability of sudden release of energy being accumulated in the vicinity of the Dauki fault system. This observation corresponds with the predicted average return period of a large earthquake (1897 type) and the possibility of M > 8 earthquake in the vicinity of the Dauki fault within this century should not be ruled out. The seismicity in the folded belt in the east follows the general trend of Arakan-Yoma anticlinorium and represents shallow and low-angled thrust movements in conformity with the field observation. Seismotectonic behaviour in the deep basin part of Bangladesh demonstrates that an intraplate movement in the basement rock has been taking place along the deep-seated faults causing relative upliftment and subsidence in the basin. Bangladesh has been divided into three seismic zones on the basis of morphotectonic and seismic behaviour. Zone-I has been identified as the zone of high seismic risk. (author). 43 refs, 5 figs, 3 tabs

  10. COLONIZACIÓN DE MOLUSCOS Y CRUSTÁCEOS EN RAÍCES DE MANGLE ROJO EN UNA LAGUNA COSTERA DE LA PUNTA NORTE DEL GOLFO DE MORROSQUILLO

    Directory of Open Access Journals (Sweden)

    PRÜSMANN JOHANNA

    2010-05-01

    Full Text Available Se evaluaron la colonización y sucesión de moluscos y crustáceos en un sustrato de raíces de mangle en tres estaciones en la ciénaga La Boquilla, Punta San Bernardo en la parte norte del Golfo de Morrosquillo. Para el seguimiento del proceso de colonización se ubicaron tres sitios en las márgenes occidental, norte y oriental, y se fijaron en cada estación seis raíces aéreas deshojadas de Rhizophora mangle. Luego de 76 y 200 días de exposición, se retiraron tres raíces de cada sitio y se identificaron los organismos por morfoespecie. Después de 200 días de exposición, se determinaron 19 especies de moluscos y cinco de crustáceos. El anfípodo Corophium sp. y el bivalvo Brachidontes exustus fueron las especies mas numerosas y agruparon una fracción muy importante de la totalidad de los individuos recolectados. La mayoría de las especies encontradas son típicas de la fauna acompañante de las raíces de mangle en el Caribe colombiano.

  11. Sexually Transmitted Infections: A Novel Screening Strategy for Improving Women’s Health in Vulnerable Populations

    Directory of Open Access Journals (Sweden)

    Elena R. Frati

    2017-06-01

    Full Text Available Background: Migrant women are one of the most vulnerable population to health problems and well-being. This study aimed at implementing a counseling and preventive strategy for sexually transmitted infections (STIs in undocumented migrant women in Milan, Italy. Methods: Women (ages 18–65 were enrolled at the NAGA Centre (2012–2013 and asked for a urine sample in order to carry out molecular detection of Human papillomavirus (HPV, Chlamydia trachomatis (Ct, Trichomonas vaginalis (Tv, Neisseria gonorrhoeae (Ng-DNA. Socio-demographic and sexual behavior information were collected. All HPV/Ct+ women were offered Pap tests and/or were prescribed antibiotic treatment. Results: 537/757 women participated in the study (acceptability rate: 70.9%. Most of the women were from Latin America (45.6% and Eastern Europe (30.7%; >60% of them had stable partners, did not use contraception and had had at least one pregnancy. The prevalence rates of HPV, Ct, Tv and Ng infections were 24.2%, 7.8%, 4.8% and 0%, respectively. In all, 43.2% of the positive women agreed to undergo a gynecological examination and accepted suitable treatment. Conclusions: This study shows an overall high prevalence of STIs in undocumented migrant women in Milan. The screening strategy based on counseling and urine testing contributed to the successfully high acceptability rate. More appropriate health services that adequately address all aspects of women’s health are required.

  12. CRECIMIENTO DE Brachiaria decumbens Stapf Y Cynodon nlemfuensis Vanderyst EN SUELOS SULFATADOS ÁCIDOS DE CÓRDOBA

    Directory of Open Access Journals (Sweden)

    Enrique Combatt C

    2008-08-01

    Full Text Available Objective. To assess the effect of different doses of lime in acid sulphate soils and physiological responses of two species of grasses, Cynodon nlemfuensis Vanderyst and Brachiaria decumbens Stapf. Materials and methods. The work was carried out during 2006 in acid sulfate soils at El Deseo farm (Ciénaga de Oro - Córdoba, Colombia, where 3, 6 and 9 tons/ha of agricultural lime was applied and two grass species, Cynodon nlemfuensis Vanderyst (pasto estrella and Brachiaria decumbens Stapf (pasto brachiaria were planted. The responses considered during 5 mowings were the chemical features of the soil, fresh and dry weight of each genotype and the leaf/stem ratio. An experiment of complete random blocks was designed using a structure of divided plots, where the main plots corresponded to the grasses and the subplots to the lime doses. Results. The most outstanding results suggested that the pH values and aluminum in the soil concentrations fall significantly with the quantity of applied lime, decreasing up to 80%. In general, the interchangeable bases increased with the lime dosage and the contents of the microelements decreased considerably over time, although this was not evident for the lime. Independently of genotype, the production of fresh biomass showed a linear relationship within lime dosage (y=0,656x + 11,99; R2=0.92; the dry mass and the leaf/stem ratio were always greater for B. decumbens compared to C. nlemfuensis, independent of lime dosage.

  13. Chitinolytic assay of indigenous Trichoderma isolates collected from different geographical locations of Chhattisgarh in Central India.

    Science.gov (United States)

    Agrawal, Toshy; Kotasthane, Anil S

    2012-12-01

    Chitin is the second most abundant polymer in nature after cellulose and plays a major role in fungal cell walls. As a producer of variety of chitinase enzymes Trichoderma has become an important means of biological control of fungal diseases. A simple and sensitive method based on the use of basal medium with colloidal chitin as sole carbon source supplemented with Bromo cresol purple (pH indicator dye) is proposed to evaluate large populations of Trichoderma for chitinase activity. The soluble substrate with pH indicator dye (Bromo cresol purple, BCP) for the assay of chitinase activity on solid media is sensitive, easy, reproducible semi-quantitative enzyme diffusion plate assay and economic option to determine chitinases. Colloidal chitin derived from Rhizoctonia cell wall and commercial chitin included as a carbon source in broth also allowed selection and comparison of chitinolytic and exochitinase activity in Trichoderma spectrophotometrically. Released N-acetyl-β--D-glucosamine (NAGA) ranged from 37.67 to 174.33 mg/ml and 37.67 to 327.67 mg/ml and p-nitrophenol (pNP) ranged from 0.17 to 35.78 X 10(-3) U/ml and 0.62 to 32.6 X 10(-3) U/ml) respectively with Rhizoctonia cell wall and commercial chitin derived colloidal chitin supplemented broth.

  14. Manuel Grijalvo, Un Obispo Burgales en Filipinas. By Roberto Blanco Andrés. Burgos: Publicaciones de la Excma. Diputación de Burgos, 2011. 88 pages, plates.

    Directory of Open Access Journals (Sweden)

    Grace Liza Y. Concepcion

    2012-12-01

    Full Text Available This brief biography is one among many published works by RobertoBlanco Andrés, a Spanish historian who specializes in the history of religious orders in the Philippines, particularly the Augustinians. The aim of the present work is simple. It is to recount Fray Manuel Grijalvo’s life as a religious priest who occupied key positions in the Augustinian Order and in the Philippine church as bishop of Nueva Caceres (now Naga in the first half of the 19th century, at a time when both the Order and the church in the Philippines were undergoing transition. This succinct narration of an Augustinian bishop’s lifeopens a window through which one can appreciate Philippine history in the 19th century. Although brief, the summary of Grijalvo’s years in the Philippines, spent in Manila and Nueva Caceres, gives a relatively complete view of the challenges that the Catholic Church was facing in this era, both within the Augustinian Order and in the Diocese of Nueva Caceres. This is so because Grijalvo was an Augustinian missionary who also occupied key posts as parish priest in Batangas towns (1814 -1818 and in Pasig (1833 -1839 and 1831-1847. He was also procurator and prior of the Order between 1818 and 1832. In1848, he was appointed bishop of Nueva Caceres, a post he occupied until his death in 1861. His life, therefore, encapsulates the struggles and challenges of the Philippine Catholic Church and the Spanish colonial government.

  15. Evaluación comparativa de algunas características limnológicas de seis ambientes leníticos de Colombia

    Directory of Open Access Journals (Sweden)

    Esnedy Hernández

    2013-01-01

    Full Text Available Este estudio propuso evaluar algunas características limnológicas de seis ambientes leníticos de Colombia ubicados en un gradiente altitudinal de las regiones Caribe, Andina y Amazónica. Estos ambientes presentan diferente origen, tipo y variabilidad climática, física y química, esto es una evidencia de que en los ambientes ecuatoriales, como los de Colombia, varían entre sí y requieren un enfoque local enlazado con patrones regionales y geográficos que influencian la limnología del sistema. Los ambientes estudiados corresponden a ciénagas y lagos de inundación de tierras bajas y lagos de alta montaña, los cuales fueron monitoreados en diferentes estaciones y momentos hidrológicos; los resultados fueron analizados en torno a sus diferencias ambientales y tróficas. La ubicación altitudinal y en consecuencia el tipo, origen, morfometría y condición hidroclimática que afecta los seis sistemas promueven cambios significativos en el régimen de precipitación, la temperatura, nivel y transparencia del agua, la concentración de nutrientes, el oxígeno disuelto, el pH, la conductividad eléctrica y la clorofila a.

  16. Campos comuneros en el valle de Hualfín (Catamarca. Antecedentes, problemática y situación actual

    Directory of Open Access Journals (Sweden)

    Bernarda Zubrzycki

    2002-01-01

    Full Text Available En este artículo nos proponemos caracterizar el régimen de tenencia de la tierra de tres campos comuneros ubicados en el valle de Hualfín, específicamente en el Distrito La Ciénaga (Catamarca, Argentina, así como indagar el origen y evolución de algunas de las poblaciones actualmente presentes en ellos. Estos campos tienen su antecedente en las mercedes de tierra otorgadas por la corona durante la época colonial; a través del tiempo se fueron vendiendo, heredando y donando derechos y acciones de uso sobre los mismos, dando lugar a una compleja situación jurídica respecto a la propiedad. Aún hoy ningún habitante de las poblaciones analizadas en este trabajo ha iniciado juicios sucesorios, deslindes o mensuras para prescripciones adquisitivas, legitimando en muchos casos su derecho a la tierra a través del parentesco con los primeros propietarios.

  17. Pythium species in 13 various types of water bodies of N-E Poland

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    Bazyli Czeczuga

    2014-01-01

    Full Text Available Pythium species and environmental factors in various types of water bodies (2 springs, 2 rivers, 3 ponds and 6 different trophic lakes were studied. Samples of water were collected every two months (springs, rivers, ponds and every three months (lakes in the years 1996-1999 for hydrochemical analysis and in order to determine the Pythium species content. From springs rivers and ponds collected were also ice blocks for determinations of presence of Pythium species. Buckwheatand hemp-seeds, cellophane and snake exuviae were used as bait. Forty-five species of Pythium were found in various types of water bodies. Pythium acanthicum, P. complectens, P. complens, P. diameson, P. dissimile, P. elongatum, P. lucens, P. megalacanthum, P. nagae, P. oedochilum, P. oryzae, P. palingenes, P. periilum and P. polysporum were recorded for the first time in Poland. The largest mean number of species was observed in spring Cypisek, a bit fewer in spring Jaroszówka and lake Białe (oligotrophic-like waters. The lowest mean number of Pythium species was noted in pond Akcent and Pałacowy (polytrophic waters. In all types of water bodies the higest mean number of species was found in winter, and the lowest in summer.

  18. Variaciones de abundancia y biomasa del zooplancton en un embalse tropical oligo-mesotrófico del norte de Venezuela

    Directory of Open Access Journals (Sweden)

    Sandra Merayo

    2010-06-01

    Full Text Available La abundancia del zooplancton en los embalses está determinada principalmente por la velocidad y el contenido del agua, pero se sabe relativamente poco sobre los embalses tropicales. Se estudió la distribución temporal y espacial de la abundancia y la biomasa del zooplancton en el eje longitudinal del embalse de Clavellinos, en el norte de Venezuela, entre octubre 2006 y septiembre 2007. El zooplancton fue recolectado en el estrato oxigenado con una red de plancton. Un total de 16 taxones fueron identificados: Copepoda, Cladocera, Rotifera, Ostracoda y Diptera. Thermocyclops decipiens (Copepoda, Cyclopoida dominó la comunidad, mientras que los rotíferos fueron los más diversos, con 10 especies. La abundancia del zooplancton varió de 31 a 101ind/l en E1, 36 a 84ind/l en E2, y, de 30 a 250ind/L en el E3. La biomasa varió de 97,4 a 1406.3μg/l en E1, 108,5 a 397.2μg/l en E2, y de 25,9 a 763.9μg/l en el E3. Esta comunidad de zooplancton pareciσ responder a las variaciones ambientales en el embalse, mαs que a las variaciones en la disponibilidad de recursos.Variations of zooplankton abundance and biomass in a tropical oligo-mesotrophic reservoir in Northern Venezuela. Zooplankton abundance in reservoirs is mainly determined by the speed and content of the water, but relatively little is known regarding tropical reservoirs. We studied the seasonal and spatial distribution of zooplankton abundance and biomass along the longitudinal axis of Clavellinos reservoir, northern Venezuela, from October 2006 to September 2007. Zooplankton was collected from the oxygenated layer using a plankton net. A total of 16 taxa were identified: Copepoda, Cladocera, Rotifera, Ostracoda and Diptera. Thermocyclops decipiens (Copepoda, Cyclopoida dominated the community, while rotifers were the most diverse, with 10 species. Zooplankton abundance varied from 31 to 101ind/L in E1, 36 to 84ind/L in E2, and, from 30 to 250ind/L in E3. Biomass varied from 97.4 to

  19. Anisakidosis, inflamación e hipersensibilidad

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    Guillermo Terán-Ángel

    2012-03-01

    Full Text Available La Anisakidosis es una enfermedad producida por parásitos de la familia Anisakidae. La infección parasitaria se adquiere por la ingesta de pescado crudo o insuficientemente cocinado. Se asocia principalmente al consumo de sushi, sashimi y cebiche; y dada la popularidad a nivel mundial de estas preparaciones, la Anisakidosis representa un importante problema de salud pública. El objetivo de esta revisión es definir algunos aspectos parasitológicos, inmunológicos y clínicos relacionados con la infección por parásitos de los géneros Anisakis simplex y Pseudoterranova decipiens agentes causales de la Anisakidosis. A manera de sinopsis puede resaltarse que los síntomas producto de la infección son el resultado de una reacción inflamatoria generada luego de que el parasito se adhiere o penetra en la mucosa del tubo digestivo. El ser humano puede estar expuesto a los antígenos a través de varias fuentes: como productos de excreción/secreción de las larvas vivas o como antígenos somáticos y de la cutícula de los nematodos muertos o desintegrados presentes en los alimentos. La Anisakidosis puede manifestarse con dos cuadros clínicos característicos: digestivos o alérgicos. La penetración en la mucosa produce una marcada respuesta inflamatoria eosinofílica. Las características clínicas suelen ser similares a las de la apendicitis aguda, úlcera gástrica, obstrucción intestinal, e incluso la enfermedad de Crohn. Por otra parte, los antígenos pueden desencadenar respuestas inflamatorias inmediatas. La reacción alérgica es acompañada por un incremento en suero de la IgE total y específica, además de una respuesta predominantemente TH2 Anisakidosis, inflammation and hypersensitivity Anisakidosis is a disease produced by Anisakidae parasite family. The parasitical infection is acquired by the ingestion of raw or deficiently cooked fish. It’s primarily associated with the consumption of sushi, sashimi and cebiche; and given

  20. Time series monitoring of water quality and microalgal diversity in a tropical bay under intense anthropogenic interference (SW coast of the Bay of Bengal, India)

    Energy Technology Data Exchange (ETDEWEB)

    Shaik, Aziz ur Rahman [CSIR — National Institute of Oceanography, Regional Centre, 176 Lawson' s Bay Colony, Visakhapatnam, AP 530017 (India); Biswas, Haimanti, E-mail: haimanti.biswas@nio.org [CSIR — National Institute of Oceanography, Regional Centre, 176 Lawson' s Bay Colony, Visakhapatnam, AP 530017 (India); Reddy, N.P.C.; Srinivasa Rao, V. [CSIR — National Institute of Oceanography, Regional Centre, 176 Lawson' s Bay Colony, Visakhapatnam, AP 530017 (India); Bharathi, M.D. [Present address: ICMAM Project Directorate, 2nd Floor, NIOT Campus, Velacherry-Tambaram Main Road, Pallikkaranai, Chennai 600100 (India); Subbaiah, Ch.V. [CSIR — National Institute of Oceanography, Regional Centre, 176 Lawson' s Bay Colony, Visakhapatnam, AP 530017 (India)

    2015-11-15

    In recent decades, material fluxes to coastal waters from various land based anthropogenic activities have significantly been enhanced around the globe which can considerably impact the coastal water quality and ecosystem health. Hence, there is a critical need to understand the links between anthropogenic activities in watersheds and its health. Kakinada Bay is situated at the SW part of the Bay of Bengal, near to the second largest mangrove cover in India with several fertilizer industries along its bank and could be highly vulnerable to different types of pollutants. However, virtually, no data is available so far reporting its physicochemical status and microalgal diversity at this bay. In order to fill this gap, we conducted three time series observations at a fixed station during January, December and June 2012, at this bay measuring more than 15 physical, chemical and biological parameters in every 3 h over a period of 36 h in both surface (0 m) and subsurface (4.5 m) waters. Our results clearly depict a strong seasonality between three sampling months; however, any abnormal values of nutrients, biological oxygen demand or dissolved oxygen level was not observed. A Skeletonema costatum bloom was observed in December which was probably influenced by low saline, high turbid and high Si input through the river discharge. Otherwise, smaller diatoms like Thalassiosira decipiens, Thalassiothrix frauenfeldii, and Thalassionema nitzschioides dominated the bay. It is likely that the material loading can be high at the point sources due to intense anthropogenic activities, however, gets diluted with biological, chemical and physical processes in the offshore waters. - Highlights: • No signature of enormous nutrient loading was observed over the diel cycle • Dissolved oxygen and BOD concentrations did not show any exceptional trend • Diatoms dominated more than 90% of the total phytoplankton communities • A Skeletonema Costatum (a centric diatom) bloom was

  1. The zooplankton biodiversity of some freshwater environments in Parnaíba basin (Piauí, Northeastern Brazil

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    JDN. Paranhos

    Full Text Available The plankton fauna of the state of Piauí, Northeastern Brazil, especially in the Parnaíba basin, is still poorly known; the results of most studies of the subject have not been published and can only be found in grey literature (unpublished scientific works, such as course completion work and consulting reports. Thus, this paper presents data from samples taken recently from different water bodies in Piauí and represents the second study to be published on the region's zooplankton since the pioneering work of Spandl (1926. A total of 38 species were recorded, including 23 new occurrences of rotifers, 10 of cladocerans and 2 of copepods for the state of Piauí. The greatest richness was observed for the rotifers, of which the genus Brachionus must be highlighted, especially at the Joana reservoir. Among the crustaceans, the greatest richness was observed at the Bezerra reservoir, where cladocerans of the genus Bosmina were prominent. The rotifers Brachionus havanaensis Rousselet, 1911 and Filinia longiseta (Ehrenberg, 1834; the cladocerans Diaphanosoma spinulosum Herbst, 1967 and Moina micrura Kurz, 1874; and the copepods Notodiaptomus cearensis Wright, 1936 and Thermocyclops decipiens Kiefer, 1927 occurred in all or in most environments in which the respective groups were studied. The results presented here expand the taxonomic list of zooplankton for the state of Piauí, including a total fauna of 30 species of rotifers, 15 of cladocerans and 3 of copepods. The zooplankton richness was considered low in the studied reservoirs compared to other freshwater ecosystems from Northeastern Brazil; however, the few studies developed in the Parnaíba basin suggest that the diversity for these organisms should be higher.

  2. Latitudinal environmental gradients and diel variability influence abundance and community structure of Chaetognatha in Red Sea coral reefs

    KAUST Repository

    Al-aidaroos, Ali M.

    2016-08-15

    The Red Sea has been recognized as a unique region to study the effects of ecohydrographic gradients at a basin-wide scale. Its gradient of temperature and salinity relates to the Indian Ocean monsoon and associated wind-driven transport of fertile and plankton-rich water in winter from the Gulf of Aden into the Red Sea. Subsequent evaporation and thermohaline circulation increase the salinity and decrease water temperatures toward the North. Compared with other ocean systems, however, relatively little is known about the zooplankton biodiversity of the Red Sea and how this relates to Red Sea latitudinal gradients. Among the most abundant zooplankton taxa are Chaetognatha, which play an important role as secondary consumers in most marine food webs. Since Chaetognatha are sensitive to changes in temperature and salinity, we surmised latitudinal changes in their biodiversity, community structure and diel variability along the coast of Saudi Arabia. Samples were collected at nine coral reefs spanning approximately 1500km, from the Gulf of Aqaba in the northern Red Sea to the Farasan Archipelago in the southern Red Sea. Thirteen Chaetognatha species belonging to two families (Sagittidae and Krohnittidae) were identified. Latitudinal environmental changes and availability of prey (i.e. Copepoda, Crustacea) altered Chaetognatha density and distribution. The cosmopolitan epiplanktonic Flaccisagitta enflata (38.1%) dominated the Chaetognatha community, and its abundance gradually decreased from South to North. Notable were two mesopelagic species (Decipisagitta decipiens and Caecosagitta macrocephala) in the near-reef surface mixed layers at some sites. This was related to wind-induced upwelling of deep water into the coral reefs providing evidence of trophic oceanic subsidies. Most Sagittidae occurred in higher abundances at night, whereas Krohnittidae were more present during the day. Chaetognatha with developing (stage II) or mature ovaries (stage III) were more active

  3. Systematics of the hypervariable Moraea tripetala complex (Iridaceae: Iridoideae of the southern African winter rainfall zone

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    P. Goldblatt

    2012-12-01

    Full Text Available Field and laboratory research has shown that the Moraea tripetala complex of western South Africa, traditionally treated as a single species, sometimes with two additional varieties, has a pattern of morphological and cytological variation too complex to be accommodated in a single species. Variation in floral structure, especially the shape of the inner tepals, degree of union of the filaments, anther length and pollen colour form coherent patterns closely correlated with morphology of the corm tunics, mode of vegetative reproduction, and in some instances capsule and seed shape and size. The morphological patterns also correlate with geography, flowering time and sometimes habitat. It is especially significant that different variants of the complex may co-occur, each with overlapping or separate flowering times, a situation that conflicts with a single species taxonomy. We propose recognizing nine species and three additional subspecies for plants currently assigned to M. tripetala. M. grandis, from the western Karoo, has virtually free filaments and leaves often ± plane distally; closely allied M. amabilis, also with ± free filaments and often hairy leaves, is centred in the western Karoo and Olifants River Valley. Its range overlaps that of M. cuspidata, which has narrowly channelled, smooth leaves, linear inner tepals spreading distally and filaments united for up to 1.5 mm. M. decipiens from the Piketberg, M. hainebachiana, a local endemic of coastal limestone fynbos in the Saldanha District, M. ogamana from seasonally wet lowlands, and early flowering M. mutila constitute the remaining species of the complex in the southwestern Western Cape. M. helmei, a local endemic of middle elevations in the Kamiesberg, Namaqualand, has small flowers with short, tricuspidate inner tepals. All but M. amabilis and M. mutila are new species. We divide M. tripetala sensu stricto into three subspecies: widespread subsp. tripetala, subsp. violacea from

  4. A Cross-Reactive Monoclonal Antibody to Nematode Haemoglobin Enhances Protective Immune Responses to Nippostrongylus brasiliensis

    Science.gov (United States)

    Nieuwenhuizen, Natalie E.; Meter, Jeanne M.; Horsnell, William G.; Hoving, J. Claire; Fick, Lizette; Sharp, Michael F.; Darby, Matthew G.; Parihar, Suraj P.; Brombacher, Frank; Lopata, Andreas L.

    2013-01-01

    Background Nematode secreted haemoglobins have unusually high affinity for oxygen and possess nitric oxide deoxygenase, and catalase activity thought to be important in protection against host immune responses to infection. In this study, we generated a monoclonal antibody (48Eg) against haemoglobin of the nematode Anisakis pegreffii, and aimed to characterize cross-reactivity of 4E8g against haemoglobins of different nematodes and its potential to mediate protective immunity against a murine hookworm infection. Methodology/Principal Findings Immunoprecipitation was used to isolate the 4E8g-binding antigen in Anisakis and Ascaris extracts, which were identified as haemoglobins by peptide mass fingerprinting and MS/MS. Immunological cross-reactivity was also demonstrated with haemoglobin of the rodent hookworm N. brasiliensis. Immunogenicity of nematode haemoglobin in mice and humans was tested by immunoblotting. Anisakis haemoglobin was recognized by IgG and IgE antibodies of Anisakis-infected mice, while Ascaris haemoglobin was recognized by IgG but not IgE antibodies in mouse and human sera. Sequencing of Anisakis haemoglobin revealed high similarity to haemoglobin of a related marine nematode, Psuedoterranova decipiens, which lacks the four –HKEE repeats of Ascaris haemoglobin important in octamer assembly. The localization of haemoglobin in the different parasites was examined by immunohistochemistry and associated with the excretory-secretary ducts in Anisakis, Ascaris and N. brasiliensis. Anisakis haemoglobin was strongly expressed in the L3 stage, unlike Ascaris haemoglobin, which is reportedly mainly expressed in adult worms. Passive immunization of mice with 4E8g prior to infection with N. brasiliensis enhanced protective Th2 immunity and led to a significant decrease in worm burdens. Conclusion The monoclonal antibody 4E8g targets haemoglobin in broadly equivalent anatomical locations in parasitic nematodes and enhances host immunity to a hookworm

  5. Rehabilitating a landfill site of lowland tropical landscape into an urban green space: A case study from the Open University of Sri Lanka

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    B.D. Madurapperuma

    2016-12-01

    Full Text Available This study examines vegetation, carbon sequestration, and spatial and temporal changes of green space at the premises of the Open University of Sri Lanka (OUSL. The primary objective of this study is to examine floral diversity of the OUSL premises that was rehabilitated from a landfill site and to determine suitable trees for landfill sites based on growth performance and biomass carbon stocks. The girth and height of plants ⩾5 cm dbh were measured to estimate biomass carbon stocks of each individual tree. GPS coordinates of each individual tree were taken for spatial mapping. Urban green spaces were extracted from Satellite view of Google Earth for a decade using screen digitizing techniques. A total of 722 individuals, comprising 95 plant species belonging to 75 genera and 33 families, were recorded. Of the total species 45% were native species. The above-ground and below-ground biomass were estimated to be 50 (t C/ha and 10 (t C/ha respectively. These results are comparable with above-ground biomass and below-ground biomass in the dry zone forest (60 and 17 (t C/ha respectively. The study recognized that Terminalia catappa, Filicium decipiens, Mangifera indica, Cassia bacillaris and Tabebuia rosea species grow well in such landfill with effective carbon accumulation, and the species list presented in this paper will provide useful information that will help city planners to maximize biomass carbon sequestration by choosing optimal plants for landscaping in landfill sites.

  6. ARBUSCULAR MYCORRHIZAL FUNGI IDENTIFICATION IN AVOCADO TREES INFECTED WITH Phytophthora cinnamomi RANDS UNDER BIOCONTROL

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    Ma. Blanca Nieves Lara Chavez

    2013-12-01

    Full Text Available Arbuscular mycorrhizal fungi presences in the rhizosphere of avocado trees with symptoms of root rot sadness caused by Phytophthora cinnamomi were determined. The investigation was done in the avocado orchard "Ojo de agua" in the town of Tancitaro, Michoacan, Mexico, in 21 previously selected trees. For the control of P. cinnamomi were applied three strains of Trichoderma (T. erinaceum, T. aggressivum and T. arundinaceum before the application was made the first soil sampling, the second 6 months later, before the second application of Tricoderma strains and the last 12 months before the third application. To remove soil spores was used wet sieving and decantation protocol proposed by Gerdemann and Nicolson (1963, followed by centrifugation on sucrose (400 g L-1 at 2000 rpm. Taxonomic identification was based on the morphological characteristics of AMF spores, considering the shape, size and color, and thickness, ornamentations and number of the layers of the wall, coupling form and supporting hyphae, identifications were made by comparison with original descriptions available in the International Collection of Arbuscular Mycorrhizal Fungi and Glomeromycota species list. The first sampling were identified eleven species in seven genera: Glomus with two undetermined species, Glomus sp.1, Glomus sp.2, Glomus etunicatum and Glomus geosporum; genus Acaulospora, one undetermined species Acaulospora sp., A. spinosa, A. bireticulata and A. denticulate; genus Entrophospora, E. infrequens; genus Diversispora, D. aurantia; genus Scutellospora, S. pellucida; genus Racocetra, R. castanea and R. verrucosa and genus Gigaspora, Gi. decipiens. In the second and third sampling, the presence of new kinds of HMA there was not observed but the number of spores increased (average 38.09% and 30% respectively. The application of these species in the genus Trichoderma to control root pathogens of avocado encouraged the growth of HMA spores in the rhizosphere of the

  7. Phylogeographic structure in the bogus yucca moth Prodoxus quinquepunctellus (Prodoxidae): comparisons with coexisting pollinator yucca moths.

    Science.gov (United States)

    Althoff, D M; Groman, J D; Segraves, K A; Pellmyr, O

    2001-10-01

    The pollination mutualism between yucca moths and yuccas highlights the potential importance of host plant specificity in insect diversification. Historically, one pollinator moth species, Tegeticula yuccasella, was believed to pollinate most yuccas. Recent phylogenetic studies have revealed that it is a complex of at least 13 distinct species, eight of which are specific to one yucca species. Moths in the closely related genus Prodoxus also specialize on yuccas, but they do not pollinate and their larvae feed on different plant parts. Previous research demonstrated that the geographically widespread Prodoxus quinquepunctellus can rapidly specialize to its host plants and may harbor hidden species diversity. We examined the phylogeographic structure of P. quinquepunctellus across its range to compare patterns of diversification with six coexisting pollinator yucca moth species. Morphometric and mtDNA cytochrome oxidase I sequence data indicated that P. quinquepunctellus as currently described contains two species. There was a deep division between moth populations in the eastern and the western United States, with limited sympatry in central Texas; these clades are considered separate species and are redescribed as P. decipiens and P. quinquepunctellus (sensu stricto), respectively. Sequence data also showed a lesser division within P. quinquepunctellus s.s. between the western populations on the Colorado Plateau and those elsewhere. The divergence among the three emerging lineages corresponded with major biogeographic provinces, whereas AMOVA indicated that host plant specialization has been relatively unimportant in diversification. In comparison, the six pollinator species comprise three lineages, one eastern and two western. A pollinator species endemic to the Colorado Plateau has evolved in both of the western lineages. The east-west division and the separate evolution of two Colorado Plateau pollinator species suggest that similar biogeographic factors have

  8. Human diseases associated with fish pathogens

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    VATSOS N. Ioannis

    2011-09-01

    Full Text Available Until recently, most cases of humans been affected by fish pathogens, bacterial and parasitic, were limited in certain countries, either due to the inappropriate sanitary measures used in those areas, or due to the local habit of eating raw or undercooked fish. However, as new reliable methods to identify fish pathogens in samples collected from sick humans have been developed, the confirmed cases worldwide have increased. The most common fish bacterial pathogens that can affect humans belong to the genera: Mycobacterium spp. (mainly M. marinum, M. chelonei, M. fortuitum, Nocardia spp., Streptococcus spp (S. iniae, Vibrio spp. (mainly V. vulnificus, V. alginolyticus and V. parahaemolyticus and Aeromonas spp. (mainly A. hydrophila and rarely A. sorbia and A. caviae. Less often, infections of humans with Edwardsiella tarda and Photobacterium damselae sbsp. damselae have been reported. Fish usually act as intermediate hosts to many important parasites of human, as for example the tapeworm Diphyllobothrium latum. To fish, these parasites cause no or little damage, as they are usually found encysted in many fish tissues. Of particular interest are someanisakids (e.g. Anisakis simplex and Pseudoterranova decipiens which can produce some thermostable allergens. Most of the above pathogens can infect humans through skin wounds or after ingesting infected fish. Compromised immune system of the infected humans may result in extensive spread of the pathogens within the body, often causing death.There are no fish viruses or fungi that can affect humans. Fish can also act as carriers for human pathogens, such as Salmonella spp., Escherichia coli and Listeria spp. Recently, few human pathogens have also been isolated from the internal organs of fish, as for example Brucella melitensis. The effects of these human pathogens to fish are still not known.

  9. The fate of copepod populations in the Paranapanema River (São Paulo, Brazil, downstream from the Jurumirim dam

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    Mitsuka Patricia Maria

    2002-01-01

    Full Text Available The longitudinal changes in the structure of copepod populations were examined during the dry and rainy seasons in a 42 km stretch of the Paranapanema River downstream from the dam of the Jurumirim Reservoir. Samples were taken in the "lacustrine" zone of the reservoir near the dam, and also at 12 stations distributed in the middle and the lateral regions of the channel of the Paranapanema River downstream from the dam. The following species of Cyclopoida were found at the sites: Thermocyclops decipiens, Thermocyclops minutus, Paracyclops sp., Tropocyclops sp and Mesocyclops sp., and of Calanoida: Argyrodiaptomus furcatus, Notodiaptomus iheringi and Notodiaptomus conifer. In the reservoir sampling station, the copepod abundance during the dry and rainy seasons corresponded to 41 and 51% of the total zooplankton, respectively. This difference could be related to the rainfall and water level variations, and especially to the influence of variables such as water temperature, dissolved oxygen and chlorophyll-a contents. No significant differences in organism numbers were recorded among samples of zooplankton taken in the middle and near-bank parts of the river. In relation to longitudinal variation in the Paranapanema River stretch, a significant decrease in density and disappearance of some species were recorded 11km downstream of the dam during the dry season. At the stations 32km from the dam, a drastic reduction in copepod abundance was observed in the rainy season. These observations could be linked not only to environmental changes from lentic to lotic conditions, but also to the combination of certain factors such as current velocity, water outflow of the reservoir, and rainfall.

  10. Biogenic silica dissolution in diatom aggregates: insights from reactive transport modelling

    KAUST Repository

    Moriceau, B

    2014-12-15

    © Inter-Research 2014. Diatom aggregates contribute significantly to the vertical sinking flux of particulate matter in the ocean. These fragile structures form a specific microhabitat for the aggregated cells, but their internal chemical and physical characteristics remain largely unknown. Studies on the impact of aggregation on the Si cycle led to apparent inconsistency. Despite a lower biogenic silica (bSiO2) dissolution rate and diffusion of the silicic acid (dSi) being similar in aggregates and in sea-water, dSi surprisingly accumulates in aggregates. A reaction-diffusion model helps to clarify this incoherence by reconstructing dSi accumulation measured during batch experiments with aggregated and non-aggregated Skeletonema marinoi and Chaetoceros decipiens. The model calculates the effective bSiO2 dissolution rate as opposed to the experimental apparent bSiO2 dissolution rate, which is the results of the effective dissolution of bSiO2 and transport of dSi out of the aggregate. In the model, dSi transport out of the aggregate is modulated by alternatively considering retention (decrease of the dSi diffusion constant) and adsorption (reversible chemical bonds between dSi and the aggregate matrix) processes. Modelled bSiO2 dissolution is modulated by the impact of dSi concentration inside aggregates and diatom viability, as enhanced persistence of metabolically active diatoms has been observed in aggregates. Adsorption better explains dSi accumulation within and outside aggregates, raising the possible importance of dSi travelling within aggregates to the deep sea (potentially representing 20% of the total silica flux). The model indicates that bSiO2 dissolution is effectively decreased in aggregates mainly due to higher diatom viability but also to other parameters discussed herein.

  11. Estudio de la composición y abundancia del zooplancton durante la fase de llenado del embalse Amaní, Norcasia (Caldas

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    Juan Pablo Álvarez Silva

    2003-01-01

    Full Text Available La variación de la composición, abundancia y diversidad del zooplancton fue analizada durante la fase de llenado del embalse Amaní en un gradiente horizontal y vertical, a partir de trece muestreos semanales realizados entre junio y agosto de 2002. La composición del zooplancton es similar a otros ecosistemas lénticos tropicales de baja altitud y fue registrado un total 32 taxa, de los cuales se destaca el rotífero Keratella por su elevada abundancia durante junio y julio. Rotifera fue el grupo que presentó la mayor riqueza de especies (16 así como una sobresaliente dominancia numérica sobre copépodos y cladóceros, con una abundancia relativa superior al 60%. La densidades promedio del zooplancton fluctuaron de manera significativa (6 a 1525 org l-1, y de forma diferencial entre los brazos del embalse y los sectores de confluencia y presa, que presentaron los menores intervalos (14-208 org l-1 y 6-108 org l-1, respectivamente. En el presente trabajo se incluyen los patrones de comportamiento de la abundancia de los géneros más frecuentes de zooplancton así como de aspectos relacionados con la dinámica poblacional de los copépodos Thermocyclops decipiens y Mesocyclops aspericornis. Se discuten los cambios en la estructura de la comunidad del zooplancton y se mencionan las posibles interacciones y fenómenos de regulación entre los diferentes taxa zooplanctónicos y de estos con el fitoplancton. Finalmente se presenta un catalogo de microfotografías de los organismos registrados. Este trabajo constituye un aporte importante de ecología descriptiva del zooplancton limnético y da pautas para posteriores monitoreos en este embalse.

  12. Crecimiento somático y relación ARN/ADN en estadios juveniles de Eucinostomus argenteus (Pisces: Gerreidae en dos localidades del Caribe de Venezuela Somatic growth and RNA/DNA rate of Eucinostomus argenteus (Pisces: Gerreidae juveniles stages at two localities of the Venezuelan

    Directory of Open Access Journals (Sweden)

    Ana Teresa Herrera-Reveles

    2012-03-01

    Full Text Available Con la finalidad de evaluar la asociación de índices de crecimiento en estadios tempranos de peces marinos, se estimó la tasa de crecimiento somático y las condiciones fisiológicas de Eucinostomus argenteus en dos zonas del nor-oriente venezolano: Bahía de Mochima y Golfo de Cariaco. La edad y el crecimiento fueron estimados basados en análisis de otolitos sagitta. Las condiciones fisiológicas fueron evaluadas por medio de las concentraciones de proteínas y la relación ARN/ADN, empleando técnicas espectofotométricas y fluorométricas sobre tejido muscular. Las relaciones entre tallas con la edad y el diámetro de los otolitos resultaron positivas, significativas y ajustadas a un modelo de regresión lineal. Los valores de la tasa de crecimiento reciente oscilaron entre 0.178 y 0.418mm día-1, la tasa de crecimiento retrocalculado varió entre 0.295 y 0.393mm día-1, y la tasa ARN/ADN osciló entre 1.65 y 6.97. No se registraron diferencias entre las zonas de estudio, sin embargo se reportaron diferencias entre localidades. A pesar de no encontrarse correlación entre la tasa de crecimiento y la relación ARN/ADN, los valores reportados sugieren crecimiento positivo de los individuos silvestres en las localidades evaluadas. No obstante, ciertas localidades mostraron valores que indican pobres condiciones nutricionales, pudiendo afectarse a futuro otras tasas vitales.Somatic growth and RNA/DNA rate of Eucinostomus argenteus (Pisces: Gerreidae juveniles stages at two localities of the Venezuelan Caribbean. In order to evaluate the association among growth indices of marine fishes at early life stages, the somatic growth rate and physiological conditions of Eucinostomus argenteus were estimated at two Venezuelan North-East zones: Mochima Bay and Cariaco Gulf. The age and somatic growth rate were estimated based on daily growth increments in sagitta otoliths. The physiological conditions were evaluated with proteins concentrations and RNA

  13. Growth of the Shortnose Mojarra Diapterus brevirostris (Perciformes: Gerreidae in Central Mexican Pacific

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    Manuel Gallardo-Cabello

    2014-01-01

    Full Text Available Se obtuvieron muestras y datos morfométricos de 394 individuos de la malacapa Diapterus brevirostris, de la captura comercial entre abril de 2010 y julio de 2012. El estudio del crecimiento se realizó por dos métodos: análisis de frecuencia de longitud y el estudio de los otolitos sagittae y asteriscus. Ambos métodos identificaron seis grupos de edad. Los parámetros de crecimiento de la ecuación de von Berta-lanffy se determinaron con el método de Ford-Walford y Gulland y por rutina ELEFAN. Ambos métodos dieron los mismos resultados: L∞= 48.61 cm, K= 0.135, to= -0.696. La longitud media para cada edad fue: edad 1= 9.97 cm; edad 2= 14.86 cm; edad 3= 19.13 cm; edad 4= 22.87 cm; edad 5= 26.12 cm y edad 6= 28.97 cm. El índice alométrico de la relación longitud-peso fue isométrico y b= 2.977; la longevidad fue de 21.5 años. El anillo de crecimiento se marca por cambios en el metabolismo del pez, junto con su respuesta a los cambios ambientales. El uso de los parámetros de crecimiento obtenidos por diferentes métodos es un resultado robusto para la aplicación de modelos de pesquerías.

  14. Crecimiento somático y relación ARN/ADN en estadios juveniles de Eucinostomus argenteus (Pisces: Gerreidae en dos localidades del Caribe de Venezuela

    Directory of Open Access Journals (Sweden)

    Ana Teresa Herrera-Reveles

    2012-03-01

    Full Text Available Con la finalidad de evaluar la asociación de índices de crecimiento en estadios tempranos de peces marinos, se estimó la tasa de crecimiento somático y las condiciones fisiológicas de Eucinostomus argenteus en dos zonas del nor-oriente venezolano: Bahía de Mochima y Golfo de Cariaco. La edad y el crecimiento fueron estimados basados en análisis de otolitos sagitta. Las condiciones fisiológicas fueron evaluadas por medio de las concentraciones de proteínas y la relación ARN/ADN, empleando técnicas espectofotométricas y fluorométricas sobre tejido muscular. Las relaciones entre tallas con la edad y el diámetro de los otolitos resultaron positivas, significativas y ajustadas a un modelo de regresión lineal. Los valores de la tasa de crecimiento reciente oscilaron entre 0.178 y 0.418mm día-1, la tasa de crecimiento retrocalculado varió entre 0.295 y 0.393mm día-1, y la tasa ARN/ADN osciló entre 1.65 y 6.97. No se registraron diferencias entre las zonas de estudio, sin embargo se reportaron diferencias entre localidades. A pesar de no encontrarse correlación entre la tasa de crecimiento y la relación ARN/ADN, los valores reportados sugieren crecimiento positivo de los individuos silvestres en las localidades evaluadas. No obstante, ciertas localidades mostraron valores que indican pobres condiciones nutricionales, pudiendo afectarse a futuro otras tasas vitales.

  15. Water relations and gas exchange in poplar and willow under water stress and elevated atmospheric CO{sub 2}

    Energy Technology Data Exchange (ETDEWEB)

    Johnson, J.D. [Washington State Univ., Intensive Forestry Program, Puyallup, WA (United States); Tognetti, R. [Universita del Molize, Dipartimento de Scienze Animali, Vegetali e dell' Ambiente, Compobasso (Italy); Pris, P. [Consiglio Nazionale delle Ricerche, Instituto per l' Agroselvicoltura, Porano (Italy)

    2002-05-01

    Predictions of shifts in rainfall patterns as atmospheric [CO{sub 2}] increases could impact the growth of fast growing trees such as Populus spp. and Salix spp. and the interaction between elevated CO{sub 2} and water stress in these species is unknown. The objectives of this study were to characterize the responses to elevated CO{sub 2} and water stress in these two species, and to determine if elevated CO{sub 2} mitigated drought stress effects. Gas exchange, water potential components, whole plant transpiration and growth response to soil drying and recovery were assessed in hybrid poplar (clone 53-246) and willow (Salix sagitta) rooted cuttings growing in either ambient (350 {mu}mol mol{sup -1}) or elevated (700 {mu}mol mol{sup -1}) atmospheric CO{sub 2} concentration ([CO{sub 2}]). Predawn water potential decreased with increasing water stress while midday water potentials remained unchanged (isohydric response). Turgor potentials at both predawn and midday increased in elevated [CO{sub 2}], indicative of osmotic adjustment. Gas exchange was reduced by water stress while elevated [CO{sub 2}] increased photosynthetic rates, reduced leaf conductance and nearly doubled instantaneous transpiration efficiency in both species. Dark respiration decreased in elevated [CO{sub 2}] and water stress reduced Rd in the trees growing in ambient [CO{sub 2}]. Willow had 56% lower whole plant hydraulic conductivity than poplar, and showed a 14% increase in elevated [CO{sub 2}] while poplar was unresponsive. The physiological responses exhibited by poplar and willow to elevated [CO{sub 2}] and water stress, singly, suggest that these species respond like other tree species. The interaction Of [CO{sub 2}] and water stress suggests that elevated [CO{sub 2}] did mitigate the effects of water stress in willow, but not in poplar. (au)

  16. The manufacturing and metrology of off-axis mirrors

    Science.gov (United States)

    Penzkofer, Karlheinz; Rascher, Rolf; Küpper, Lutz; Liebl, Johannes

    2015-10-01

    Especially in the area of the large mirror manufacturing only a few manufacturers are capable to produce optical surfaces of high quality. Therefore a deterministic process should be developed in the project IFasO. In the field of telescope optics off-axis optical systems are becoming increasingly important. These systems try to avoid an obstructing of the incoming light by moving the secondary mirror out of the primary mirror's optical axis. This advantage leads to an increasing market for this type of optical surface. Until now off-axis mirrors were difficult or almost impossible to produce. With the processes developed in IFasO, high quality mirrors become possible. For this reason, this paper describes the manufacturing of off-axis surfaces and its problems. The mirror production used in the project IFasO is based on the specific design of the CNC center developed by the company Optotech. This center UPG2000 is capable of grinding, polishing, sagitta measurement and interferometric measurement in one mounting of the specimen. Usually a large optics has to be transported during their manufacturing after every individual process step. There is always a risk of damage of the specimen. The exact orientation of the surface relatively to the tool position is also required. This takes a huge amount of time and makes up most of the production time. In this presentation the use of UPG2000 and the next steps within the process development are described. In the current status the manufacturing of large off-axis elements with a PV < λ/10 rms is reproducible.

  17. New records of stink bugs (Hemiptera: Pentatomidae) from Colombia.

    Science.gov (United States)

    Castro-Huertas, Valentina; Schwertner, Cristiano F; Fernández, Fernando

    2015-06-18

    New records of genera and species of stink bugs (Hemiptera: Pentatomidae) from Colombia are provided. Two genera are new records for South America: Alathetus and Schraderiellus. Fifteen genera are new record for Colombia: Agaclitus, Boea, Ceratozygum, Euthyrhynchus, Eritrachys, Doesburguedessa, Lopadusa, Marmessulus, Paralincus, Patanius, Peromatus, Phalaecus, Phoeacia, Rio, and Tyrannocoris. Forty-nine species from five subfamiles are recorded for the first time in Colombia. Asopinae: Coryzorhaphis carneolus Erichson, Coryzorhaphis superba Breddin, Euthyrhynchus floridanus (Linnaeus), Podisus sagitta Fabricius, Stiretrus anchorago (Fabricius), Stiretrus cinctellus Germar, Tylospilus peruvianus Horvath, Tyrannocoris nigriceps Thomas. Cyrtocorinae: Ceratozygum horridum (Germar). Discocephalinae: Agaclitus dromedarius Stål, Antiteuchus melanoleucus (Westwood), Antiteuchus sepulcralis (Fabricius), Dinocoris gibbosus (Fallou), Dinocoris variolosus (Linnaeus), Discocephalessa terminalis (Walker), Dryptocephala crenata Ruckes, Dryptocephala dentifrons (Latreille), Eurystethus ovalis Ruckes, Paralcippus dimidiatus (Ruckes), Alathetus rufitarsus Dallas, Eritrachys bituberculata Ruckes, Paralincus bimaculatus (Ruckes), Schraderiellus cinctus (Ruckes), Xynocoris recavus (Garbelotto & Campos). Edessinae: Brachystethus cribus (Fabricius), Brachystethus tricolor Bolívar, Doesburguedessa elongatispina Fernandes and Lopadusa fuscopunctata (Distant). Pentatominae: Banasa fulgida Thomas, Banasa paraexpallescens Thomas, Dichelops divisus (Walker), Dichelops nigrum Bergroth, Euschistus carbonerus Rolston, Mormidea bovilla (Distant), Mormidea triangularis (Walker), Murgantia bifasciata Herrich-Schaeffer, Murgantia violascens (Westwood), Oebalus pugnax (Fabricius), Oebalus ypsilon-griseus (DeGeer), Odmalea concolor (Walker), Patanius vittatus Rolston, Proxys albopunctulatus (Palisot), Proxys punctulatus (Palisot), Rhyncholepta grandicallosa Bergroth, Rio insularis Ruckes, Roferta

  18. Bioacumulación de cadmio en ostras de la bahía de Cartagena: Bio-accumulation cadmium in oysters of Cartagena bay

    Directory of Open Access Journals (Sweden)

    Ganiveth Manjarrez Paba

    2008-07-01

    Full Text Available La Bahía de Cartagena es una de los cuerpos de agua más contaminados de la ciudad, probablemente debido a las industrias que yacen a su alrededor, algunas de las cuales vierten sus desechos en ella, con poco o ningún tipo de tratamiento. Actualmente, los metales pesados como el cadmio, las operaciones de dragado y relleno, los efluentes térmicos y la sedimentación están causando la degradación de los ecosistemas de la bahía a una tasa alarmante. Esta investigación determinó las concentraciones de cadmio en ostras capturadas en seis puntos estratégicos de la bahía: Álcalis, Bocachica, Caño de Loro, Caño Zapatero, Ciénaga Honda y Zona Franca. Los resultados revelaron que no existen diferencias estadísticamente significativas entre los valores medios de concentración de Cd en ostras en cada uno de los muestreos realizado, y que Ciénaga Honda y Bocachica fueron las estaciones donde se detectó mayor concentración del metal en ostras (25,79 mg Cd/kg y 15,11 mg Cd/kg, respectivamente. Este estudio evidencia el peligro al que están expuestos los consumidores de ostras capturadas en la Bahía de Cartagena, y permite alertar a las autoridades competentes sobre la vigilancia del control en los puntos críticos.Cartagena Bay is one of the most contaminated bodies of water in the city, probably due to the industries around it; some of them dispose of their waste in it, with little or no treatment. Currently, heavy metals such as cadmium, dredging and filling, thermal effluents and sedimentation are causing the degradation of the ecosystem of the bay at an alarming rate. This investigation found concentrations of cadmium in oysters which are caught in six strategic points of the Bay: Álcalis, Bocachica, Caño Loro, Caño Zapatero, Cienaga Honda, and the Free Zone. The results showed that there were no statistically significant differences between the mean values of Cd concentrations in oysters in each one of the samples taken, and that

  19. Assessing Freshwater Ecosystem Service Risk over Ecological, Socioeconomic, and Cultural Gradients: Problem Space Characterization and Methodology

    Science.gov (United States)

    Harmon, T. C.; Villamizar, S. R.; Conde, D.; Rusak, J.; Reid, B.; Astorga, A.; Perillo, G. M.; Piccolo, M. C.; Zilio, M.; London, S.; Velez, M.; Hoyos, N.; Escobar, J.

    2014-12-01

    Freshwater ecosystems and the services they provide are under increasing anthropogenic pressure at local (e.g., irrigation diversions, wastewater discharge) and global scales (e.g., climate change, global trading). The impact depends on an ecosystem's sensitivity, which is determined by its geophysical and ecological settings, and the population and activities in its surrounding watershed. Given the importance of ecosystem services, it is critical that we improve our ability to identify and understand changes in aquatic ecosystems, and translate them to risk of service loss. Furthermore, to inspire changes in human behavior, it is equally critical that we learn to communicate risk, and pose risk mitigation strategies, in a manner acceptable to a broad spectrum of stakeholders. Quantifying the nature and timing of the risk is difficult because (1) we often fail to understand the connection between anthropogenic pressures and the timing and extent of ecosystem changes; and (2) the concept of risk is inherently coupled to human perception, which generally differs with cultural and socio-economic conditions. In this study, we endeavor to assess aquatic ecosystem risks across an international array of six study sites. The challenge is to construct a methodology capable of capturing the marked biogeographical, socioeconomic, and cultural differences among the sites, which include: (1) Muskoka River watershed in humid continental Ontario, Canada; (2) Lower San Joaquin River, an impounded snow-fed river in semi-arid Central California; (3) Ciénaga Grande de Santa Marta, a tropical coastal lagoon in Colombia; (4) Senguer River basin in the semi-arid part of Argentina; (5) Laguna de Rocha watershed in humid subtropical Uruguay; and (6) Palomas Lake complex in oceanic Chilean Patagonia. Results will include a characterization of the experimental gradient over the six sites, an overview of the risk assessment methodology, and preliminary findings for several of the sites.

  20. Linking fishery management and conservation in a tropical estuarine lagoon: biological and physical effects of an artisanal fishing gear

    Science.gov (United States)

    Rueda, M.; Defeo, O.

    2003-04-01

    Information coming from fishery monitoring, surveys and experimental fishing with participation of fishers was employed to determine the impact of an artisanal gear, 'boliche', on the biodiversity of the Ciénaga Grande de Santa Marta (CGSM), an estuarine lagoon on the Caribbean coast of Colombia. Fishery monitoring (catch data) included landings before (1968 and 1978) and after (1994-1996) the introduction of the boliche in the CGSM (1985), whereas surveys were conducted seasonally during 1993-1994. Fishing experiments involved evaluating different mesh sizes and the short-term effect of physical disturbance by the boliche. Monitoring suggested potential trophic effects of this fishing gear: the catch of large, long-lived, carnivorous species declined after the introduction of the boliche in the CGSM, whereas catch rates of smaller, shorter-lived, and lower trophic level species increased. Surveys revealed that the boliche retained 41 species. The by-catch made up 62% of the total catch and the remaining 38% involved the three target species Eugerres plumieri, Mugil incilis and Cathorops spixii. Selectivity experiments showed that 2.5 in. stretched mesh size gill nets caught more species than the 3.0-in. mesh. The smaller mesh also increased the risk of a critical reduction in the spawning stock of target species (notably E. plumieri); a situation that could affect the fish community if mesh sizes lower than 2.5 in. were intensively used. Suspended particulate matter significantly increased after fishing activity, with higher resuspension on mud-shells and mud substrata, whereas dissolved oxygen showed no appreciable changes after fishing operations. Notwithstanding, the activity of the boliche would generate sediment resuspension between 382 and 470 t day -1, which could lead to potential cascade impacts on water quality. We propose a framework of redundancy in management measures in order to simultaneously reach management and conservation goals.

  1. A unique gene cluster for the utilization of the mucosal and human milk-associated glycans galacto-N-biose and lacto-N-biose in Lactobacillus casei.

    Science.gov (United States)

    Bidart, Gonzalo N; Rodríguez-Díaz, Jesús; Monedero, Vicente; Yebra, María J

    2014-08-01

    The probiotic Lactobacillus casei catabolizes galacto-N-biose (GNB) and lacto-N-biose (LNB) by using a transport system and metabolic routes different from those of Bifidobacterium. L. casei contains a gene cluster, gnbREFGBCDA, involved in the metabolism of GNB, LNB and also N-acetylgalactosamine. Inactivation of gnbC (EIIC) or ptsI (Enzyme I) of the phosphoenolpyruvate : sugar phosphotransferase system (PTS) prevented the growth on those three carbohydrates, indicating that they are transported and phosphorylated by the same PTS(Gnb) . Enzyme activities and growth analysis with knockout mutants showed that GnbG (phospho-β-galactosidase) hydrolyses both disaccharides. However, GnbF (N-acetylgalactosamine-6P deacetylase) and GnbE (galactosamine-6P isomerase/deaminase) are involved in GNB but not in LNB fermentation. The utilization of LNB depends on nagA (N-acetylglucosamine-6P deacetylase), showing that the N-acetylhexosamine moieties of GNB and LNB follow different catabolic routes. A lacAB mutant (galactose-6P isomerase) was impaired in GNB and LNB utilization, indicating that their galactose moiety is channelled through the tagatose-6P pathway. Transcriptional analysis showed that the gnb operon is regulated by substrate-specific induction mediated by the transcriptional repressor GnbR, which binds to a 26 bp DNA region containing inverted repeats exhibiting a 2T/2A conserved core. The data represent the first characterization of novel metabolic pathways for human milk oligosaccharides and glycoconjugate structures in Firmicutes. © 2014 John Wiley & Sons Ltd.

  2. Dysfunction of mitochondria due to environmental carcinogens in nasopharyngeal carcinoma in the ethnic group of Northeast Indian population.

    Science.gov (United States)

    Ghosh, Sankar Kumar; Singh, Anil Seram; Mondal, Rosy; Kapfo, Wetetsho; Khamo, V; Singh, Y Indibor

    2014-07-01

    Nasopharyngeal carcinoma (NPC) is a rare cancer worldwide, but in India, NPC is uncommon in its subcontinent except in the north-eastern part of the country. NPC is thought to be caused by the combined effects of environmental carcinogens, genetic susceptibility and Epstein-Barr virus (EBV). This is the first study that aimed to examine the selected risk factors, mostly dietary, viral environmental, metabolic gene polymorphisms, mitochondrial DNA (mtDNA) copy number variation and their risk, in subjects who are highly prone to NPC in the ethnic groups of Northeast India, which has included cases, first-degree relatives and controls. The cases and controls were selected from three ethnic groups (Manipuri, Naga and Mizo) of Northeast India with high prevalence of NPC. This case-control family study includes 64 NPC patients, 88 first-degree relatives and 100 controls having no history of cancer. PCR-based detection was done for EBV-latent membrane protein 1 (LMP1) gene and glutathione S-transferase Mu 1 (GSTM1)-glutathione S-transferase theta 1 (GSTT1) polymorphism. A comparative ΔCt method was used for the determination of mtDNA content. An increased risk of 2.00-6.06-folds to NPC was observed with those who intake smoked meat and fish, salted fish and fermented fish; betel nut chewers; tobacco smokers; alcohol drinkers; and those who have kitchen inside the living room, glutathione S-transferase null genotype and EBV infection. The risk of NPC increased in cases with decreased mtDNA copy number (P trend = 0.007). A significant difference between GST null genotypes and EBV infection with mtDNA content was found in the cases (P < 0.0001). The understandings of environment-genetic risk factors and their role in the etiology of NPC are helpful as preventive measures and screening.

  3. Observaciones ecológicas en la Isla de Salamanca (Depto. del Magdalena, Colombia Observaciones ecológicas en la Isla de Salamanca (Depto. del Magdalena, Colombia

    Directory of Open Access Journals (Sweden)

    Schnetter Marie-Luise

    1969-06-01

    Full Text Available Von August 1965 bis Juni 1967 wurden auf der Isla de Salamanca ökologische Untersuchungen durchgeführt. Das genannte Gebiet liegt an der kolumbianischen Atlantikküste zwischen Barranquilla und Ciénaga und wird im Norden von der karibischen See und im Süden von der Ciénaga Grande de Santa Marta begrenzt. Die mittlere Jahrestemperatur beträgt 28° C. Die Trockenzeit dauert fünf Monate, die jährliche Niederschlagsmenge liegt wahrscheinlich bei 700 mm. Der Boden besteht überall aus Sand.  Weite Teile der Insel, vor allem im Westen, sind mit Mangrove bedeckt. Im Osten, wo die Untersuchungen durchgeführt wurden, breitet sich auf höher gelegenen Stellen ein 5-7 m hohes Gebüsch aus Dornsträuchern und Kakteen aus, In Gebieten, die sich wenig über Meeresniveau erheben, ist der Boden versalzen und entweder vegetationslos oder mit Halophyten, vor allem Batis maritima und Sesuvium portulacastrum, bedeckt. Die Bodenversalzung wird hauptsächlich durch bis an die Oberfläche aufsteigendes und dort verdunstendes salzhaltiges Grundwasser verursacht.  Während der Trockenzeit lagert sich auf den unbewachsenen Flächen eine Salzkruste ab, die in der Regenzeit durch Niederschläge ausgewaschen wird. Der Salzgehalt der mit Halophyten bestandenen Gebiete kann in der Trockenzeit über den der unbewachsenen Stellen ansteigen, was möglicherweise auf die Wasseraufnahme durch die Pflanzen und den dadurch verstärkten Wasserentzug zurückzuführen ist.  Soweit das Grundwasser dicht unter der Bodenoberfläche steht, ist ein das ganze Jahr über hoher Bodenwassergehalt vorhanden. Je mehr das Niveau ansteigt, desto geringer wird er, Am Ende der Trockenzeit kann die Wasserversorgung an mit Pflanzen bestandenen Stellen stärker beansprucht sein als an vegetationslosen. Jedoch hält in der Regenzeit der bewachsenen Boden die Niederschläge besser fest als der unbewachsene. Der Trockenbusch breitet sich nur an solchen Stellen aus, an denen das salzhaltige

  4. Cálculo de patana especializada construida de PRFV. // Calculation of specialized shalow water vessels designed and manufactured with PRFV.

    Directory of Open Access Journals (Sweden)

    J. García de la Figal

    2006-09-01

    Full Text Available Se trata del cálculo de resistencia y rigidez de una patana especializada para el tratamiento de aguas residuales en la zonapantanosa de la Ciénaga de Zapata, Cuba, por lo que se recurre a materiales altamente duraderos y resistentes a la acción deun medio tan agresivo. Se trata de plásticos y fibra de vidrio. Por los altos pesos en la cubierta, su calculo no estaestablecido en los Registros de Buques, haciéndose necesario el calculo completo de la patana con este material ortotrópico.Para ello se recurrió al Método de los Elementos Finitos, a través del empleo de un programa de computación. Se llega aldiseño completo de las diferentes partes de la patana con este complejo material. Ya ha sido construida y está en operación.Palabras claves: Elementos finitos, embarcaciones, tratamiento de aguas,PRFV.___________________________________________________________________________________AbstractThis paper deals with the calculations of resistance and rigidity of a specialized shalow water vessel for the treatment ofwaste waters. It will be located in the marshy area of Cienaga de Zapata, Cuba, for this reason highly durable and resistantmaterials to the action of such aggressive environment are used. We are dealing with plastics and glass fiber due to the highweight in the cover the calculation is not established by Ships Registrations and therefore became necessary to carried outthe complete vessel calculation with this orthotropic material. It was neccesary applied the Finite Elements Method bymeans of a computation program. We arrived to the complete design of different parts of the vessel with this complexmaterial. It has already been built and it is in operation.Key words: Finite element, vessel, water treatment, PRFV.

  5. Cálculo de patana especializada construida de PRFV. // Calculation of specialized shalow water vessels designed and manufactured with PRFV.

    Directory of Open Access Journals (Sweden)

    J. García de la Figal

    2003-05-01

    Full Text Available Se trata del cálculo de resistencia y rigidez de una patana especializada para el tratamiento de aguas residuales en la zonapantanosa de la Ciénaga de Zapata, Cuba, por lo que se recurre a materiales altamente duraderos y resistentes a la acción deun medio tan agresivo. Se trata de plásticos y fibra de vidrio. Por los altos pesos en la cubierta, su calculo no estaestablecido en los Registros de Buques, haciéndose necesario el calculo completo de la patana con este material ortotrópico.Para ello se recurrió al Método de los Elementos Finitos, a través del empleo de un programa de computación. Se llega aldiseño completo de las diferentes partes de la patana con este complejo material. Ya ha sido construida y está en operación.Palabras claves: Elementos finitos, embarcaciones, tratamiento de aguas,PRFV._______________________________________________________________________________AbstractThis paper deals with the calculations of resistance and rigidity of a specialized shalow water vessel for the treatment ofwaste waters. It will be located in the marshy area of Cienaga de Zapata, Cuba, for this reason highly durable and resistantmaterials to the action of such aggressive environment are used. We are dealing with plastics and glass fiber due to the highweight in the cover the calculation is not established by Ships Registrations and therefore became necessary to carried outthe complete vessel calculation with this orthotropic material. It was neccesary applied the Finite Elements Method bymeans of a computation program. We arrived to the complete design of different parts of the vessel with this complexmaterial. It has already been built and it is in operation.Key words: Finite element, vessel, water treatment, PRFV.

  6. Helminth infracommunity structure of the sympatric garter snakes Thamnophis eques and Thamnophis melanogaster from the Mesa Central of Mexico.

    Science.gov (United States)

    Jiménez-Ruiz, F Agustin; García-Prieto, Luis; Pérez-Ponce de León, Gerardo

    2002-06-01

    Seventy-two Mexican garter snakes (Thamnophis eques) and 126 black-bellied garter snakes (T. melanogaster) were collected from 4 localities of the Mesa Central of Mexico between July 1996 and February 1998 and examined for helminths. Both species of garter snakes occurred sympatrically in every locality except in Lake Cuitzeo. Both species of snakes shared 9 helminth species, and in general, T. melanogaster hosted a larger number of species than T. eques. In each locality, a different helminth species showed the highest levels of prevalence and abundance (Spiroxys susanae in Ciénaga de Lerma, Telorchis corti in Lago de Pátzcuaro, Proteocephalus variabilis in Lago de Cuitzeo, and Contracaecum sp. in Lago de Chapala). Helminth communities in garter snakes of the Mesa Central are depauperate and dominated by a single parasite species. In those localities where the snakes occurred in sympatry, helminth communities were, in general, more diverse and species-rich in T. melanogaster. Differences in the ecology and physiology of these species of garter snakes may explain this pattern because black-bellied garter snakes (T. melanogaster) are more aquatic than Mexican garter snakes (T. eques) and primarily eat aquatic prey, potentially exposing themselves to a larger number of helminths transmitted by predator-prey infection. The helminth infracommunities of garter snakes in the Mesa Central of Mexico show a strong Nearctic influence because most of the species infecting these hosts have been recorded in other Nearctic colubrid snakes. However, the helminth infracommunities of these garter snakes are less species-rich and less diverse than those in colubrid snakes in more temperate latitudes. The widespread ecological perturbation of sampling sites in the Mesa Central because of human activity, and geographic differences in foraging ecology of the hosts and, thus, exposure to parasites transmitted by intermediate hosts may help to explain these patterns.

  7. APLICACIÓN METODOLÓGICA PARA OBTENER MODELOS DIGITALES DE ELEVACIÓN -MDE- DE ESCALA LOCAL EN ZONAS DE HUMEDALES

    Directory of Open Access Journals (Sweden)

    QUINTERO DEIBY ALEJANDRO

    2010-05-01

    Full Text Available Para el entendimiento de los sistemas hidrológicos y la descripción de los procesos ce flujo que se dan entre sus componentes, es fundamental contar con una descripción fisiográfica que comprenda la caracterización hidrográfica. Morfomètrica y del relieve Cuando se van a adelantar estudios locales, la cartografía básica disponible. en el mejor de los casos a escala 1:25.000, suele no obedecer a las necesidades requeridas para representar de forma adecuada, la dinámica hídrica que caracteriza las interacciones entre corrientes de agua, acuíferos y cuerpos lénticos en zonas planas, particularmente, en aquellas donde existen humedales asociados a antiguas llanuras de inundación de ríos Limitaciones para resolver esta situación la constituyen la escasez de recursos financieros para obtener nueva y suficiente información, acorde con la escala de los proyectos locales. En la búsqueda de alternativas, las condiciones geomorfológicas de zonas con relieve plano brindan una oportunidad para la "construcción" de nuevos calos Con la cartografía básica disponible y estos catos. utilizando las herramientas de modelación espacial acopladas a los SIG. se puede obtener Modelos Digitales de Elevación -MDE- mejorados y concordantes con las cinámicas de flujo superficial y subterráneo del sistema hidrológico. En este articulo, se presenta una aplicación metodológica en este sentido, para el entorno geográfico ce la7ona de captura del humedal Ciénaga Colombia en el Bajo Cauca antioqueño.

  8. KEBIJAKAN PENGELOLAAN HASIL TANGKAPAN SAMPINGAN TUNA LONGLINE DI SAMUDERA HINDIA

    Directory of Open Access Journals (Sweden)

    Budi Nugraha

    2013-11-01

    Full Text Available Tuna longline atau rawai tuna merupakan salah satu alat tangkap yang sangat efektif untuk menangkap tuna. Selain efektif alat tangkap ini juga merupakan alat tangkap yang selektif terhadap hasil tangkapannya. Namun demikian, alat tangkap ini masih menimbulkan suatu masalah dimana ikan hasil tangkapan yang diperoleh tidak semuanya merupakan hasil tangkapan utama (target species, ada sebagian yang merupakan hasil tangkapan sampingan (by-catch. Sebagian besar hasil tangkapan sampingan tuna longline memiliki nilai ekonomis, hanya jenis pari lumpur dan ikan naga yang tidak memiliki nilai ekonomis. Namun demikian, justru yang tidak memiliki nilai ekonomis mendominasi hasil tangkapan sampingan pada perikanan tuna longline. Oleh karena itu perlu adanya tindak lanjut dengan menyusun peraturan atau regulasi yang terkait dengan pengelolaan ikan hasil tangkapan sampingan dan pengelolaan yang benar terhadap hasil tangkapan tersebut beserta habitatnya agar terjaga kelestarian sumberdayanya dan juga tetap menjadi sumber pendapatan masyarakat.Tulisan ini membahas secara ringkas tentang isu hasil tangkapan sampingan pada perikanan tuna longline, komposisi jenisnya, pemanfaatannya dan kebijakannya. Tuna longline is one of the most effective fishing gears to catch tuna. In addition, this fishing gear is selective to catch tuna. However, this gear is still causing a problem where some species other than their target species were caught as by-catch. Most of by-catch species from the tuna longliners have an economic value, except pelagic stingrays and lancetfish. In fact, these by-catch species (non economical-valued species dominated the longline catch. Therefore, it is needed to develop rules or regulations related to the management of the fish by-products, and properly manage the fishing activities on these by-catch species and habitat preservation to preserve its resources and also remain as a source of income. This paper briefly discusses the issue of by

  9. PRACCIS: UNA ESTRATEGIA DIDÁCTICA BASADA EN LA HERMENÉUTICA PARA LA CIRCULACIÓN DE LOS CONOCIMIENTOS* O ACERCA DEL DESARROLLO DE UNA PRUEBA PILOTO.

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    GONZÁLEZ AGUDELO ELVIA MARÍA

    2012-07-01

    Full Text Available Este artículo muestra cómo se aplicó la estrategia didáctica denominada Praccis, a través de una cartilla didáctica titulada "El Zooplancton de la Ciénaga de Ayapel y su papel en la Ecología de este Ecosistema", como producto de la investigación denominada "Dinámica espacial y temporal del Zooplancton asociado a las macrófitas en el complejo cenagoso de Ayapel,  Córdoba, Colombia". La aplicación de dicha estrategia se llevó a cabo como una prueba piloto y se recolectó la información a través de diferentes textos, a saber: dos diarios de campo, cinco cartillas diligenciadas, 52 encuestas tramitadas por la comunidad no científica y una conversación con la coordinadora del taller. Estos textos se leyeron desde una perspectiva hermenéutica: a partir de los prejuicios, se reflexionó, analizó, comparó, comprendió e interpretó las concurrencias y las ocurrencias de los participantes en el evento para encontrar unidades de significación con el fin de establecer la unidad de sentido, es decir, avalar la estrategia didáctica para facilitar la circulación del conocimiento científico en comunidades no científicas y ser capaz de generar cultura, en este caso, alrededor del objeto agua.

  10. Effects of red pitaya juice supplementation on cardiovascular and hepatic changes in high-carbohydrate, high-fat diet-induced metabolic syndrome rats.

    Science.gov (United States)

    Ramli, Nurul Shazini; Brown, Lindsay; Ismail, Patimah; Rahmat, Asmah

    2014-06-12

    The fruit of Hylocereus polyrhizus, also known as red pitaya, and buah naga in Malay, is one of the tropical fruits of the cactus family, Cactaceae. Red pitaya has been shown to protect aorta from oxidative damage and improve lipid profiles in hypercholesterolemic rats probably due to phytochemicals content including phenolics and flavonoids. The aim of this study was to investigate the changes in cardiac stiffness, hepatic and renal function in high-carbohydrate, high-fat diet-induced obese rats following supplementation of red pitaya juice. Total 48 male Wistar rats were divided into 4 groups: corn-starch group (CS), corn-starch+red pitaya juice group (CRP), high-carbohydrate, high fat group (HCHF) and high-carbohydrate, high fat+red pitaya juice (HRP). The intervention with 5% red pitaya juice was started for 8 weeks after 8 weeks initiation of the diet. Heart function was determined ex vivo with Langendorff hearts while plasma liver enzymes, uric acid and urea were measured using commercial kits. Total fat mass was determined with Dual-energy X-ray absorptiometry (DXA) scan. Glucose uptake was measured with Oral Glucose Tolerance Test (OGTT). Liver and cardiac structures were defined by histology. Supplementation of red pitaya juice for 8 weeks increased energy intake and abdominal circumference but no change in body fat and lean mass respectively. Also, there were a trend of uric acid and glucose normalization for HRP as compared to H-fed rats. Red pitaya juice treatment reduced ALP and ALT but caused significant increment in AST. Diastolic stiffness of the heart was reduced after supplementation of red pitaya juice in corn starch fed rats. However, the reduction was not significant in HRP rats in comparison with H rats. The present study concluded that red pitaya juice may serve as a complimentary therapy for attenuating some signs of metabolic syndrome.

  11. Analysis of Epstein Barr Virus Encoded RNA Expression in Nasopharyngeal Carcinoma in North-Eastern India: A Chromogenic in Situ Hybridization Based Study

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    Anjan Saikia

    2016-05-01

    Full Text Available Introduction: Nasopharyngeal carcinoma (NPC is a common cancer in the North-East region of India. Though the role of environmental contributors of NPC in the North-Eastern part of India is firmly established, EBV as an etiological agent in the region remains unexplored. Material and Methods: Fifty-one patients, who presented at the department of ENT, NEIGRIHMS and were confirmed as NPC upon histopathological examination, were included in the study. Chromogenic in-situ hybridization (CISH was used for the evaluation of EBER (Epstein Barr Virus Encoded RNA. Presence of nuclear signals was taken as positive for EBER expression. EBER status was correlated with various clinicopathological parameters like age, sex, dietary habits, histological types of NPC, and ethnicity of the patients. Results: The age range of the study group was 25 to 70 years with a mean age of 44.64 years and a male:female ratio of 3:2. Non-keratinizing undifferentiated type of NPC was the most common histological type. EBV was positive in 59% (30/51 of our cases. It showed a statistically significant correlation with the Naga community (P=0.01, with consumption of smoked food (P=0.02, and cigarette smoking (P=0.02. There was no correlation of EBV with age, sex, lymph node metastasis, stage, and histology. Conclusion: Our result indicates that EBV may be an additional risk factor in the pathogenesis of NPC in this region of India. So apart from lifestyle modification, a future study for a screening test for EBV viral load even in asymptomatic patients may be considered, for determination of disease susceptibility, early diagnosis, and proper management.

  12. Hydrologic modeling of Guinale River Basin using HEC-HMS and synthetic aperture radar

    Science.gov (United States)

    Bien, Ferdinand E.; Plopenio, Joanaviva C.

    2017-09-01

    This paper presents the methods and results of hydrologic modeling of Guinale river basin through the use of HEC-HMS software and Synthetic Aperture Radar Digital Elevation Model (SAR DEM). Guinale River Basin is located in the province of Albay, Philippines which is one of the river basins covered by the Ateneo de Naga University (ADNU) Phil-LiDAR 1. This research project was funded by the Department of Science and Technology (DOST) through the Philippine Council for Industry, Energy and Emerging Technology Research and Development (PCIEERD). Its objectives are to simulate the hydrologic model of Guinale River basin using HEC-HMS software and SAR DEM. Its basin covers an area of 165.395 sq.km. and the hydrologic model was calibrated using the storm event typhoon Nona (international name Melor). Its parameter had undergone a series of optimization processes of HEC-HMS software in order to produce an acceptable level of model efficiency. The Nash-Sutcliffe (E), Percent Bias and Standard Deviation Ratio were used to measure the model efficiency, giving values of 0.880, 0.260 and 0.346 respectively which resulted to a "very good" performance rating of the model. The flood inundation model was simulated using Legazpi Rainfall Intensity Duration Frequency Curves (RIDF) and HEC-RAS software developed by the US Army corps of Engineers (USACE). This hydrologic model will provide the Municipal Disaster Risk Reduction Management Office (MDRRMO), Local Government units (LGUs) and the community a tool for the prediction of runoff in the area.

  13. Economic emission dispatching with variations of wind power and loads using multi-objective optimization by learning automata

    International Nuclear Information System (INIS)

    Liao, H.L.; Wu, Q.H.; Li, Y.Z.; Jiang, L.

    2014-01-01

    Highlights: • Apply multi-objective optimization by learning automata to power system. • Sequentially dimensional search and state memory are incorporated. • Track dispatch under significant variations of wind power and load demand. • Good performance in terms of accuracy, distribution and computation time. - Abstract: This paper is concerned with using multi-objective optimization by learning automata (MOLA) for economic emission dispatching in the environment where wind power and loads vary. With its capabilities of sequentially dimensional search and state memory, MOLA is able to find accurate solutions while satisfying two objectives: fuel cost coupled with environmental emission and voltage stability. Its searching quality and efficiency are measured using the hypervolume indicator for investigating the quality of Pareto front, and demonstrated by tracking the dispatch solutions under significant variations of wind power and load demand. The simulation studies are carried out on the modified midwestern American electric power system and the IEEE 118-bus test system, in which wind power penetration and load variations present. Evaluated on these two power systems, MOLA is fully compared with multi-objective evolutionary algorithm based on decomposition (MOEA/D) and non-dominated sorting genetic algorithm II (NSGA-II). The simulation results have shown the superiority of MOLA over NAGA-II and MOEA/D, as it is able to obtain more accurate and widely distributed Pareto fronts. In the dynamic environment where the operation condition of both wind speed and load demand varies, MOLA outperforms the other two algorithms, with respect to the tracking ability and accuracy of the solutions

  14. Sialic Acid Catabolism Confers a Competitive Advantage to Pathogenic Vibrio cholerae in the Mouse Intestine▿

    Science.gov (United States)

    Almagro-Moreno, Salvador; Boyd, E. Fidelma

    2009-01-01

    Sialic acids comprise a family of nine-carbon ketosugars that are ubiquitous on mammalian mucous membranes. However, sialic acids have a limited distribution among Bacteria and are confined mainly to pathogenic and commensal species. Vibrio pathogenicity island 2 (VPI-2), a 57-kb region found exclusively among pathogenic strains of Vibrio cholerae, contains a cluster of genes (nan-nag) putatively involved in the scavenging (nanH), transport (dctPQM), and catabolism (nanA, nanE, nanK, and nagA) of sialic acid. The capacity to utilize sialic acid as a carbon and energy source might confer an advantage to V. cholerae in the mucus-rich environment of the gut, where sialic acid availability is extensive. In this study, we show that V. cholerae can utilize sialic acid as a sole carbon source. We demonstrate that the genes involved in the utilization of sialic acid are located within the nan-nag region of VPI-2 by complementation of Escherichia coli mutants and gene knockouts in V. cholerae N16961. We show that nanH, dctP, nanA, and nanK are highly expressed in V. cholerae grown on sialic acid. By using the infant mouse model of infection, we show that V. cholerae ΔnanA strain SAM1776 is defective in early intestinal colonization stages. In addition, SAM1776 shows a decrease in the competitive index in colonization-competition assays comparing the mutant strain with both O1 El Tor and classical strains. Our data indicate an important relationship between the catabolism of sialic acid and bacterial pathogenesis, stressing the relevance of the utilization of the resources found in the host's environment. PMID:19564383

  15. INFLUENCE OF CONCENTRATION OF RIND EXTRACT OF RED DRAGON FRUIT (HYLOCEREUS COSTARICENSIS AGAINST THE DSSC EFFECIENCY

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    A. Setiawan

    2016-01-01

    Full Text Available Research on utilization of rind extracts of red dragon fruit (hylocereus costaricensis as sensitizer for dye sensitized solar cell (DSSC has been conducted by reviewing influence of the concentration against the DSSC efficiency. Characterization on optical absorption at various concentrations and identification of functional groups, each using an UV-Vis spectrometer and Fourier transform infra red (FTIR, have done to the dye in the form of the extracts. The dye characterization result on optical absorption at various concentration shows that the optical absorption at range of wavelength 320-760 nm has the peak of absorbance tend to increase with increasing the concentration. Therefore the dye is capable to role as a sunlight absorber. Meanwhile, infra red absorption spectrum obtained from FTIR results indicate the presence of functional groups O-H, C=O, C=C, C-O, and C-H aromatic. Results of current-voltage characterization of DSSC show an increase in maximum power and efficiency with increasing concentration.Penelitian mengenai pemanfaatan ekstrak kulit buah naga merah (hylocereus costaricensis sebagai penyensitif pada dye sensitized solar cell (DSSC telah dilakukan dengan meninjau pengaruh konsentrasi ekstrak terhadap efisiensi DSSC. Terhadap dye berupa ekstrak kulit H. Costaricencis dilakukan pengujian serapan optik pada berbagai konsentrasi dan identifikasi gugus fungsi, masing-masing menggunakan spektrometer UV-Vis dan fourier transform infra red (FTIR. Hasil pengujian dye pada konsentrasi 100 %, 50 %, 33,33 %, 25%, dan 20% menunjukan serapan optik yang terjadi pada panjang gelombang 320-760 nm, memiliki puncak yang cenderung semakin tinggi seiring dengan peningkatan konsentrasi. Dye yang berasal dari ekstrak kulit H. Costaricensis ini mampu berperan sebagai sunlight absorber. Sementara itu, spektrum serapan infra red yang diperoleh dari hasil FTIR mengindikasikan adanya gugus fungsi O-H, C=O, C=C, C-O, dan C-H aromatik. Hasil karakterisasi

  16. Sialic acid catabolism confers a competitive advantage to pathogenic vibrio cholerae in the mouse intestine.

    Science.gov (United States)

    Almagro-Moreno, Salvador; Boyd, E Fidelma

    2009-09-01

    Sialic acids comprise a family of nine-carbon ketosugars that are ubiquitous on mammalian mucous membranes. However, sialic acids have a limited distribution among Bacteria and are confined mainly to pathogenic and commensal species. Vibrio pathogenicity island 2 (VPI-2), a 57-kb region found exclusively among pathogenic strains of Vibrio cholerae, contains a cluster of genes (nan-nag) putatively involved in the scavenging (nanH), transport (dctPQM), and catabolism (nanA, nanE, nanK, and nagA) of sialic acid. The capacity to utilize sialic acid as a carbon and energy source might confer an advantage to V. cholerae in the mucus-rich environment of the gut, where sialic acid availability is extensive. In this study, we show that V. cholerae can utilize sialic acid as a sole carbon source. We demonstrate that the genes involved in the utilization of sialic acid are located within the nan-nag region of VPI-2 by complementation of Escherichia coli mutants and gene knockouts in V. cholerae N16961. We show that nanH, dctP, nanA, and nanK are highly expressed in V. cholerae grown on sialic acid. By using the infant mouse model of infection, we show that V. cholerae DeltananA strain SAM1776 is defective in early intestinal colonization stages. In addition, SAM1776 shows a decrease in the competitive index in colonization-competition assays comparing the mutant strain with both O1 El Tor and classical strains. Our data indicate an important relationship between the catabolism of sialic acid and bacterial pathogenesis, stressing the relevance of the utilization of the resources found in the host's environment.

  17. Studi Eksperimental Pengaruh Intensitas Cahaya terhadap Performa DSSC (Dye Sensitized Solar Cell dengan Ekstrak Buah dan Sayur Sebagai Dye Sensitizer

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    Khoiruz Zadit Taqwa

    2015-03-01

    Full Text Available Sel surya adalah peralatan yang dapat mengubah energi matahari menjadi energi listrik dengan menggunakan efek photovoltaic. Desain dan konstruksi dari solar cell mengalami perkembangan seiring dengan berkembangnya teknologi saat ini, hingga pada tahun 1991 ditemukan DSSC (Dye Sensitized Solar Cell. Sampai saat ini bahan yang umum digunakan sebagai dye pada pembuatan DSSC adalah ruthenium complex yang berharga mahal dan sulit untuk disintesa. Karena itu perlu dilakukannya penelitian tentang penggunaan bahan lain yang murah dan mudah untuk disintesa sebagai bahan dye, karena itu perlu diadakan pengujian terhadap performa yang dihasilkan dari DSSC dengan bahan dye tersebut dan apa saja variabel yang mempengaruhinya. Metode penelitian yang digunakan adalah studi eksperimental terhadap prototype DSSC dengan variasi bahan dye sensitizer dari ekstrak kulit manggis (Garcinia mangostana, ekstrak daun bayam (Amaranthus hybridus l. ekstrak buah naga merah (Hylocereus polyrhizus. Pengujian prototype DSSC dilakukan dengan cara menyinarinya menggunakan cahaya lampu halogen yang diatur tegangannya menggunakan sebuah dimmer untuk mengendalikan temperatur dari lampu, sehingga lampu tersebut menghasilkan variasi tintensitas cahaya sebesar 29 W/m2, 36 W/m2 dan 49 W/m2. Selanjutnya pengujian dilakukian dengan cara yang sama, tetapi dengan ditambahkan pendingin berupa air yang mengalir dibawah permukaan prototype DSSC. Penilitian ini menghasilkan kesimpulan bahwa semakin tinggi intensitas cahaya, maka semakin tinggi Pmax yang dihasilkan oleh prototype. Semakin bertambah temperatur pencahayaan maka semakin berkurang performa dari prototype DSSC. Efisiensi yang paling besar dihasilkan oleh prototype dengan bahan dye dari ekstrak kulit manggis pada intensitas 29 W/m2 sebesar 0,73%,Pendinginan yang diberikan kepada prototype mampu memperbaiki efisiensi dari prototype DSSC yang dibuat akan tetapi tidak signifikan.

  18. Predicting impact of SLR on coastal flooding in Banda Aceh coastal defences

    Science.gov (United States)

    Al'ala, Musa; Syamsidik, Kato, Shigeru

    2017-10-01

    Banda Aceh is a low-lying city located at the northern tip of Sumatra Island and situated at the conjuncture of Malacca Strait and the Andaman Sea. A Sea Level Rise (SLR) rate at 7 mm/year has been observed around this region. In the next 50 years, this city will face a serious challenge to encounter impacts of the sea level rise, such as frequent coastal floodings. This study is aimed at estimating impacts of the sea level rise induced coastal floodings on several types of coastal structures and city drainage system. Numerical simulations of Delft3D were applied to investigate the influence of the gradual sea level rise in 50 years. The hydrodynamic process of coastal flooding and sediment transport were simulated by Delft3D-Flow. Topography and bathymetry data were collected from GEBCO and updated with the available nautical chart (DISHIDROS, JICA, and field measurements). Hydrodynamic process gains the flow process revealing the level of the sea water intrusion also observed in the model. Main rivers (Krueng Aceh, Krueng Neng, and Alue Naga Flood Canal) and the drainage system were observed to see the tides effects on coastal structures and drainage system. The impact on coastal community focusing on affected area, shoreline retreat, the rate of sea intrusion was analyzed with spatial tools. New coastal line, coastal flooding vulnerable area, and the community susceptibility properties map influenced by 50 years sea level rise is produced. This research found that the city needs to address strategies to anticipate the exacerbating impacts of the sea level rise by managing its coastal spatial planning and modify its drainage system, especially at the drainage outlets.

  19. Patterns of genetic diversity at the nine forensically approved STR loci in the Indian populations.

    Science.gov (United States)

    Dutta, Ranjan; Reddy, B Mohan; Chattopadhyay, P; Kashyap, V K; Sun, Guangyun; Deka, Ranjan

    2002-02-01

    Genetic diversity at the nine short tandem repeat (STR) loci, which are universally approved and widely used for forensic investigations, has been studied among nine Indian populations with diverse ethnic, linguistic, and geographic backgrounds. The nine STR loci were profiled on 902 individuals using fluorescent detection methods on an ABI377 System, with the aid of an Amp-F1 Profiler Plus Kit. The studied populations include two upper castes, Brahmin and Kayastha; a tribe, Garo, from West Bengal; a Hindu caste, Meitei, with historical links to Bengal Brahmins; a migrant group of Muslims; three tribal groups, Naga, Kuki and Hmar, from Manipur in northeast India; and a middle-ranking caste, Golla, who are seminomadic herders from Andhra Pradesh. Gene diversity analysis suggests that the average heterozygosity is uniformly high (>0.8) in the studied populations, with the coefficient of gene differentiation at 0.050 +/- 0.0054. Both neighbor-joining (NJ) and unweighted pair group method with arithmetic mean (UPGMA) trees based on DA distances bring out distinct clusters that are consistent with ethnic, linguistic, and/or geographic backgrounds of the populations. The fit of the Harpending and Ward model of regression of average heterozygosity on the gene frequency centroid is found to be good, and the observed outliers are consistent with the population structure and history of the studied populations. Our study suggests that the nine STR loci, used so far mostly for forensic investigations, can be used fruitfully for microevolutionary studies as well, and for reconstructing the phylogenetic history of human populations, at least at the local level.

  20. EL DESARROLLO DE UN ASENTAMIENTO LACUSTRE EN LA CUENCA ALTA DEL RÍO LERMA: EL CASO DE SANTA CRUZ ATIZAPÁN, MÉXICO CENTRAL (The development of a lake settlement in the upper basin of the Lerma river

    Directory of Open Access Journals (Sweden)

    Shigeru Kabata

    2010-03-01

    Full Text Available El valle de Toluca se localiza en la cuenca hidrológica Lerma-Chapala-Santiago, la más extensa de la República Mexicana. A lo largo de su milenaria historia, ha sido reconocido por ser una región donde se encuentran tres ciénagas (Chignahuapan, Chimaliapan y Chicnahuapan, circundadas por volcanes y densos bosques además del río Lerma. La riqueza ambiental de este frío valle favoreció la temprana ocupación de la región, cuyas evidencias arqueológicas se remontan, por lo menos, hasta hace más de 3000 años, durante el Formativo temprano. Hacia 500/600 d. C., las condiciones climáticas se volvieron más secas, provocando el descenso del nivel de agua de las lagunas y permitiendo la colonización del interior de las ciénagas. El sitio arqueológico Santa Cruz Atizapán constituye uno de los asentamientos lacustres que se fundaron en esta zona. Este artículo se enfoca en él, donde los antiguos pobladores se adaptaron a las condiciones del terreno cenagoso y lo transformaron en un lugar habitable, construyendo unos cien montículos sobre los cuales levantaron sus casas-habitaciones. Trata, también, acerca del modo de vida lacustre, donde prevalece la relación simbiótica del hombre con su medio, y sobre el intercambio de productos con otras regiones, que destacan por considerarse de gran relevancia en el desarrollo y consolidación del sitio como centro rector. A pesar de que los montículos dentro de la ciénaga fueron abandonados a fines del Epiclásico cuando las condiciones climáticas provocaron nuevamente un ascenso en el nivel del agua, la parte nuclear del sitio Santa Cruz Atizapán continuó funcionando durante el Posclásico como uno de los centros regionales importantes. ENGLISH: The Valley of Toluca is situated in the Lerma-Chapala-Santiago hydrological system, the largest basin of the Mexican Republic. Throughout its history it has been known for its three shallow water lakes or marshes (Chignahuapan, Chimaliapan and

  1. Copepod assemblage structure (Crustacea: Copepoda along a longitudinal environmental gradient in a tropical river-floodplain system, Brazil

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    Welinton Sousa Palhiarini

    2017-12-01

    . cearensis and N. cf. spinuliferus. On the other hand, the lakes were positively correlated with temperature and pH and also with a higher abundance of Thermocyclops minutus and T. decipiens. Conclusion We highlight the importance of the maintenance of the ecological integrity of the Upper Paraná River floodplain, especially of its tributaries, in order to support the high biodiversity registered in the last undammed stretch. Furthermore, we highlight the importance of manipulation of water levels in reservoirs located upstream of this stretch, a necessary condition to maintain the hydrological connectivity between floodplain habitats and the main river.

  2. PLANTAS USADAS POR UNA COMUNIDAD INDÍGENA COREGUAJE EN LA AMAZONÍA COLOMBIANA

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    Trujillo William

    2010-06-01

    Full Text Available Se presentan las plantas útiles en una comunidad indígena Coreguaje del alto Caquetá en la Amazonía colombiana. Con la participación de diez conocedores indígenas, se realizaron recorridos de manera independiente en áreas de montaña (= bosque secundario, rastrojos, huertos habitacionales, chagras y potreros, del resguardo Gorgonia, municipio de Milán. Se registraron los nombres vernáculos y los usos de las plantas, los cuales se clasifi caron en trece categorías. A partir del Valor de Uso (VU (empleando la metodología de usos totalizados y Valores de Preferencia(VP, se identifi caron las especies de mayor importancia para la comunidad yse probó la diferencia en los VP a plantas medicinales de dos conocedores. Sepresenta información etnobotánica para 171 especies (137 géneros en 67 familias.Las categorías de uso medicinal (72 spp., construcción (38 spp. y alimento (33spp. fueron las más importantes. El VU depende de la abundancia en la montaña(r = 0.388, p = 0.001, n = 65; 72% de las 90 especies arbóreas (DAP ≥ 10 cmhalladas en 0.2 ha de montaña son empleadas por lo menos en una de las categoríasde uso, principalmente para construcción, aserrío y alimento. El espacio de usomás valorado fue la montaña con 76 especies útiles. Siparuna decipiens, Socrateaexorrhiza, Wittmackanthus stanleyanus y Vismia sp., fueron las plantas con mayorVU (3 mientras que el VP más alto fue registrado para Rauvolfi a leptophylla.Se recomienda la elaboración de planes de conservación para esta especie porestar sufriendo disminución de su hábitat en el área de estudio y por ser rara enla Amazonía colombiana. No existe diferencia signifi cativa (p>0.05 entre los VPa las plantas medicinales de los dos médicos tradicionales, sugiriendo que ambosconocedores conforman un sistema común de conocimiento etnomédico.Palabras clave.

  3. Seal dynamics on the Swedish west coast: Scenarios of competition as Baltic grey seal intrude on harbour seal territory

    Science.gov (United States)

    Svensson, Carl Johan

    2012-07-01

    populations very long time-series of population size estimates are necessary to determine interaction strength. From a management perspective, a more permanent grey seal population in Kattegat-Skagerrak is likely to increase the predation pressure on overfished regional cod populations, and also lead to higher prevalence of the cod parasite Pseudoterranova decipiens, which uses grey seal as end host. From a population ecology perspective, abundant Baltic grey seal in this region would facilitate the mixing of grey seals from the North Atlantic and the Baltic Sea, with unknown implications for the genetically divergent Baltic population.

  4. Can lichen species of BSC acclimate to changing environments?

    Science.gov (United States)

    Williams, Laura; Colesie, Claudia; Büdel, Burkhard

    2015-04-01

    sites. Lichen species are also analysed to investigate the variability within their morphological and physiological traits and whether this is site specific. From the transplant experiment lichen samples are analysed to find whether lichen species can readily switch their photobiont to a locally adapted symbiont and whether the morphological and physiological parameters change in order to acclimatise to the new conditions. This work is currently ongoing and here the initial results from the lichen species Psora decipiens, Fulgensia fulgens (green algal lichens) and Peltigera rufescens (cyanolichen) are presented.

  5. Parasitism between Anisakis simplex (Nematoda: Anisakidae) third-stage larvae and the spotted mackerel Scomber australasicus with regard to the application of stock identification.

    Science.gov (United States)

    Chou, Yi-Ying; Wang, Chun-Shun; Chen, Hui-Guan; Chen, Hui-Yu; Chen, Shiu-Nan; Shih, Hsiu-Hui

    2011-05-11

    The nematode fauna of 369 spotted mackerel of the species Scomber australasicus, collected off the northeastern Taiwanese coast of the northwestern Pacific, was investigated monthly from April 2004 to March 2005. The following nematode species were recorded: Anisakis simplex complex, Hysterothylacium aduncum, Porrocaecum decipiens and Raphidascaris trichiuri. The seasonal variation in the infection with A. simplex third stage larva (L3) was studied throughout the 12 months. The prevalence of A. simplex L3 recorded for total fish samples was 93.6%, varying between 86.7 and 100%. There was an increase in the abundance of this nematode in spring, with the peak occurring in April. To reveal whether intrinsic factors of the spotted mackerel host contributed to infection with this nematode, fish were grouped according to their body weight, age and gonad development (reported as gonadoosomatic index, GSI), respectively, and infection parameters (i.e., prevalence, abundance and intensity) were analyzed. Results showed that abundance was significantly higher in both larger (>450 g) and older (>3 years old) fish. The gonad development of the host fish was not correlated with the intensity of the larval infection in both female and male fish. Two distinct Anisakis species were identified by PCR-RFLP, namely A. pegreffii and a recombinant genotype of A. pegreffii and A. simplex sensu stricto. These species occurred with frequencies of 97% and 3%, respectively. The usefulness of using parasites as biomarkers for spotted mackerel stock identification around Taiwanese waters was confirmed herein. A second group of 58 spotted mackerel were obtained from the coastal waters off southwestern Taiwan. In addition to the two species, A. pegreffii and the recombinant one, which were found with frequencies of 63% and 9%, respectively, an additional Anisakis species A. typica was identified with a frequency of 28% from these fish. Two spotted mackerel stocks could thus be identified based

  6. Occurrence of Terranova larval types (Nematoda: Anisakidae in Australian marine fish with comments on their specific identities

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    Shokoofeh Shamsi

    2016-03-01

    Full Text Available Pseudoterranovosis is a well-known human disease caused by anisakid larvae belonging to the genus Pseudoterranova. Human infection occurs after consuming infected fish. Hence the presence of Pseudoterranova larvae in the flesh of the fish can cause serious losses and problems for the seafood, fishing and fisheries industries. The accurate identification of Pseudoterranova larvae in fish is important, but challenging because the larval stages of a number of different genera, including Pseudoterranova, Terranova and Pulchrascaris, look similar and cannot be differentiated from each other using morphological criteria, hence they are all referred to as Terranova larval type. Given that Terranova larval types in seafood are not necessarily Pseudoterranova and may not be dangerous, the aim of the present study was to investigate the occurrence of Terranova larval types in Australian marine fish and to determine their specific identity. A total of 137 fish belonging to 45 species were examined. Terranova larval types were found in 13 species, some of which were popular edible fish in Australia. The sequences of the first and second internal transcribed spacers (ITS-1 and ITS-2 respectively of the Terranova larvae in the present study showed a high degree of similarity suggesting that they all belong to the same species. Due to the lack of a comparable sequence data of a well identified adult in the GenBank database the specific identity of Terranova larval type in the present study remains unknown. The sequence of the ITS regions of the Terranova larval type in the present study and those of Pseudoterranova spp. available in GenBank are significantly different, suggesting that larvae found in the present study do not belong to the genus Pseudoterranova, which is zoonotic. This study does not rule out the presence of Pseudoterranova larvae in Australian fish as Pseudoterranova decipiens E has been reported in adult form from seals in Antarctica and it

  7. A LATE SANTONIAN FISH-FAUNA FROM THE EUTAW FORMATION OF ALABAMA RECONSTRUCTED FROM OTOLITHS

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    WERNER W. SCHWARZHANS

    2018-01-01

    Full Text Available The otoliths described here from the Late Santonian of the Eutaw Formation of Alabama, represent one of the earliest association of teleost otoliths known from North America and it is remarkable for its good preservation and species diversity. They were collected by the late C.K. Lamber in 1969 from a road cut on the Hurtsboro-Marvyn highway south of Marvyn in Russell County, eastern Alabama. It contains 18 taxa based on sagittae otoliths, of which 14 are identifiable to the species level, 10 species are new to science and five new genera. The new otolith-based genera are: Allogenartina n. gen. (Stomiiformes family indet., Pseudotrichiurus n. gen. (Aulopiformes family indet., Eutawichthys n. gen. (Beryciformes family indet., Cowetaichthys n. gen. (Polymixiidae and Vox n. gen. (Teleostei family indet.; the new species are: Elops eutawanus n. sp., Genartina cretacea n. sp., Allogenartina muscogeei n. sp., Pseudotrichiurus sagax n. sp., Apateodus? assisi n. sp., Eutawichthys compressus n. sp., Eutawichthys stringeri n. sp., Cowetaichthys alabamae n. sp., Cowetaichthys lamberi n. sp. and Vox thlotlo n. sp. In addition, 8 different morphologies are recognized based on lapilli otoliths, which however cannot be identified to a distinct taxonomic level except for a species of the Ariidae. Two taxa can be related to otoliths recently recorded in situ, pertaining to the genera Osmeroides and Apateodus. The otolith association bears much similarity with those of the Campanian to Maastrichtian of the USA described previously as indicated by the dominance of otoliths of the genera Eutawichthys and Osmeroides. Differences with those faunas are on the species level as well as in the accessory components. The abundance of otoliths of the albuliforms (Osmeroides, putative stomiiforms (Allogenartina, beryciform (Eutawichthys and polymixiids (Cowetaichthys characterizes a rather stable faunal composition through the entire Late Cretaceous of locations studied in

  8. The zooplankton biodiversity of some freshwater environments in Parnaíba basin (Piauí, Northeastern Brazil Diversidade do zooplâncton de alguns ambientes de água doce na bacia do rio Parnaíba (Piauí, Nordeste do Brasil

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    JDN. Paranhos

    2013-02-01

    Full Text Available The plankton fauna of the state of Piauí, Northeastern Brazil, especially in the Parnaíba basin, is still poorly known; the results of most studies of the subject have not been published and can only be found in grey literature (unpublished scientific works, such as course completion work and consulting reports. Thus, this paper presents data from samples taken recently from different water bodies in Piauí and represents the second study to be published on the region's zooplankton since the pioneering work of Spandl (1926. A total of 38 species were recorded, including 23 new occurrences of rotifers, 10 of cladocerans and 2 of copepods for the state of Piauí. The greatest richness was observed for the rotifers, of which the genus Brachionus must be highlighted, especially at the Joana reservoir. Among the crustaceans, the greatest richness was observed at the Bezerra reservoir, where cladocerans of the genus Bosmina were prominent. The rotifers Brachionus havanaensis Rousselet, 1911 and Filinia longiseta (Ehrenberg, 1834; the cladocerans Diaphanosoma spinulosum Herbst, 1967 and Moina micrura Kurz, 1874; and the copepods Notodiaptomus cearensis Wright, 1936 and Thermocyclops decipiens Kiefer, 1927 occurred in all or in most environments in which the respective groups were studied. The results presented here expand the taxonomic list of zooplankton for the state of Piauí, including a total fauna of 30 species of rotifers, 15 of cladocerans and 3 of copepods. The zooplankton richness was considered low in the studied reservoirs compared to other freshwater ecosystems from Northeastern Brazil; however, the few studies developed in the Parnaíba basin suggest that the diversity for these organisms should be higher.A fauna planctônica do Estado do Piauí, Nordeste do Brasil, especialmente para a Bacia do Rio Parnaíba, é ainda pouco conhecida; o resultado da maioria dos estudos não é publicado, podendo ser encontrado apenas em bibliografia

  9. Epilachnini (Coleoptera: Coccinellidae)—A Revision of the World Genera

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    Tomaszewska, Wioletta; Szawaryn, Karol

    2016-01-01

    Based on the recent revised generic classification of the tribe Epilachnini (Szawaryn et al. 2015), all 27 genera are re-described, diagnosed, illustrated, and included in an identification key. The following nomenclatural changes are made: Epilachna (Hypsa) Mulsant 1850, Epilachna (Cleta) Mulsant 1850, Solanophila Weise 1898, Epilachna (Aparodentata) Wang and Cao 1993, and Epilachna (Uniparodentata) Wang and Cao 1993 are removed from synonymy of Epilachna Chervolat 1837. The subgenus Cleta of Epilachna is raised to the genus level, as Cleta Mulsant 1850 stat. nov.; the subgenus Uniparodentata of Epilachna is raised to the genus level, as Uniparodentata Wang and Cao 1993 stat. nov. Chazeauiana Tomaszewska and Szawaryn 2015 (type species, Epilachna sahlbergi Mulsant 1850), and Epilachna (Hypsa) Mulsant 1850 (type species, Epilachna nigrolimbata Thomson 1875) are synonymized here under the name Cleta Mulsant 1850 (type species, Epilachna eckloni Mulsant 1850)—new synonyms; Fuerschia Tomaszewska and Szawaryn 2015 (type species, Coccinella canina Fabricius 1781) is synonymized with Solanophila Weise 1898 (type species, Epilachna gibbosa Crotch 1874)—new synonym; Ryszardia Tomaszewska and Szawaryn 2015 (type species, Epilachna decipiens Crotch 1874) and Epilachna (Aparodentata) Wang and Cao, 1993 (type species, Epilachna yongshanensis Cao and Xiao 1984) are synonymized under the name Uniparodentata Wang and Cao 1993 (type species, Epilachna paramagna Pang and Mao 1979)—new synonyms. Henosepilachna (Elateria) Fürsch 1964 (type species: Coccinella elaterii Rossi 1794) is removed from synomyms of Henosepilachna Li 1961 [type species, Coccinella sparsa Herbst 1786 (=Coccinella vigintioctopunctata Fabricius 1775)] and is synonymized here with Chnootriba Chevrolat 1837 (type species: Coccinella similis Thunberg 1781)—new synonym. Coccinella flavofasciata Laporte 1840, Epilachna aequatorialis Gordon 1975, E. bizonata Crotch 1874, E. convergens Crotch 1874, E. cruciata

  10. Epilachnini (Coleoptera: Coccinellidae)-A Revision of the World Genera.

    Science.gov (United States)

    Tomaszewska, Wioletta; Szawaryn, Karol

    2016-01-01

    Based on the recent revised generic classification of the tribe Epilachnini (Szawaryn et al. 2015), all 27 genera are re-described, diagnosed, illustrated, and included in an identification key. The following nomenclatural changes are made: Epilachna (Hypsa) Mulsant 1850, Epilachna (Cleta) Mulsant 1850, Solanophila Weise 1898, Epilachna (Aparodentata) Wang and Cao 1993, and Epilachna (Uniparodentata) Wang and Cao 1993 are removed from synonymy of Epilachna Chervolat 1837. The subgenus Cleta of Epilachna is raised to the genus level, as Cleta Mulsant 1850 stat. nov.; the subgenus Uniparodentata of Epilachna is raised to the genus level, as Uniparodentata Wang and Cao 1993 stat. nov. Chazeauiana Tomaszewska and Szawaryn 2015 (type species, Epilachna sahlbergi Mulsant 1850), and Epilachna (Hypsa) Mulsant 1850 (type species, Epilachna nigrolimbata Thomson 1875) are synonymized here under the name Cleta Mulsant 1850 (type species, Epilachna eckloni Mulsant 1850)-new synonyms; Fuerschia Tomaszewska and Szawaryn 2015 (type species, Coccinella canina Fabricius 1781) is synonymized with Solanophila Weise 1898 (type species, Epilachna gibbosa Crotch 1874)-new synonym; Ryszardia Tomaszewska and Szawaryn 2015 (type species, Epilachna decipiens Crotch 1874) and Epilachna (Aparodentata) Wang and Cao, 1993 (type species, Epilachna yongshanensis Cao and Xiao 1984) are synonymized under the name Uniparodentata Wang and Cao 1993 (type species, Epilachna paramagna Pang and Mao 1979)-new synonyms. Henosepilachna (Elateria) Fürsch 1964 (type species: Coccinella elaterii Rossi 1794) is removed from synomyms of Henosepilachna Li 1961 [type species, Coccinella sparsa Herbst 1786 (=Coccinella vigintioctopunctata Fabricius 1775)] and is synonymized here with Chnootriba Chevrolat 1837 (type species: Coccinella similis Thunberg 1781)-new synonym. Coccinella flavofasciata Laporte 1840, Epilachna aequatorialis Gordon 1975, E. bizonata Crotch 1874, E. convergens Crotch 1874, E. cruciata Mulsant

  11. Moluscos; anélidos y crustáceos asociados a las raíces de Rhizophora mangle linnaeus, en la región de Santa Marta, caribe colombiano Moluscos; anélidos y crustáceos asociados a las raíces de Rhizophora mangle Linnaeus, en la región de Santa Marta, caribe colombiano

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    Reyes Rosalba

    1992-09-01

    Full Text Available A qualitative and quantitative study of the community of macro invertebrates associated to the submerged stilt roots of the red mangrove, Rhizophora mangle Linnaeus, 1753, was carried out trimonthly between December 1988 and September 1989, in three stations at the Cienaga Grande de Santa Marta (CGSM and three at the Parque Nacional Natural Tayrona (PNNT, Bahia de Chengue, Bahia de Nenguange, Colombian Caribbean. 181 species were determined: 99 crustaceans, 50 molluscs and 32 annellids. Most of the 26.729 individuals counted were crustaceans (12.213 moluscs (11.635 and annellids (2.881. The lowest diversity and evenness values, and the highest dominance values were found at the CGSM, while the opposite occurred at the PNNT. Moreover, cluster analysis showed that at the CGSM temporal variations in community composition were greater than spatial ones, while at the PNNT spatial differences were stronger. Other factors that could be importantin determinig community structure were detected, such as vecinity to other ecosystems and/or species- specific biological aspects as adaptations to fluctuating conditions, reproductive acti vities, feeding habits and migration to protected and shaded habitats. Se realizó un estudio trimestral cualitativo y cuantitativo de la comunidad de moluscos, anélidos y crustáceos asociados a las raíces sumergidas del mangle rojo, Rhizophora mangle Linnaeus, entre diciembre de 1988 y septiembre de 1989, en tres estaciones en la Ciénaga Grande de Santa Marta (CGSM y tres en el Parque Nacional Natural Tayrona (PNNT, Bahía de Chengue y Bahía de Nenguange, Caribe colombiano. Se determinaron 181 especies: 99 crustáceos, 50 moluscos y 32 anélidos. En total se contaron 26.729 individuos: 12.213 crustáceos, 11.635 moluscos y 2.881 anélidos. Los valores más bajos de diversidad y equitatividad, y los mayores valores de dominancia, se encontraron en la CGSM, mientras que lo opuesto ocurrió en el PNNT. El análisis de

  12. Red pitaya juice supplementation ameliorates energy balance homeostasis by modulating obesity-related genes in high-carbohydrate, high-fat diet-induced metabolic syndrome rats.

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    Ramli, Nurul Shazini; Ismail, Patimah; Rahmat, Asmah

    2016-07-26

    Red pitaya (Hylocereus polyrhizus) or known as buah naga merah in Malay belongs to the cactus family, Cactaceae. Red pitaya has been shown to give protection against liver damage and may reduce the stiffness of the heart. Besides, the beneficial effects of red pitaya against obesity have been reported; however, the mechanism of this protection is not clear. Therefore, in the present study, we have investigated the red pitaya-targeted genes in obesity using high-carbohydrate, high-fat diet-induced metabolic syndrome rat model. A total of four groups were tested: corn-starch (CS), corn-starch + red pitaya juice (CRP), high-carbohydrate, high-fat (HCHF) and high-carbohydrate, high-fat + red pitaya juice (HRP). The intervention with 5 % red pitaya juice was continued for 8 weeks after 8 weeks initiation of the diet. Retroperitoneal, epididymal and omental fat pads were collected and weighed. Plasma concentration of IL-6 and TNF-α were measured using commercial kits. Gene expression analysis was conducted using RNA extracted from liver samples. A total of eighty-four genes related to obesity were analyzed using PCR array. The rats fed HCHF-diet for 16 weeks increased body weight, developed excess abdominal fat deposition and down-regulated the expression level of IL-1α, IL-1r1, and Cntfr as compared to the control group. Supplementation of red pitaya juice for 8 weeks increased omental and epididymal fat but no change in retroperitoneal fat was observed. Red pitaya juice reversed the changes in energy balance homeostasis in liver tissues by regulation of the expression levels of Pomc and Insr. The increased protein expression levels of IL-6 and TNF-α in HCHF group and red pitaya treated rats confirmed the results of gene expression. Collectively, this study revealed the usefulness of this diet-induced rat model and the beneficial effects of red pitaya on energy balance homeostasis by modulating the anorectic, orexigenic and energy expenditure related

  13. UN ENCUENTRO DE ARQUEOLOGÍAS: RESCATES Y ESTUDIO DE COLECCIONES DEL INICIO DEL PERÍODO TARDÍO (CA. SIGLOS XI-XIII (CATAMARCA, ARGENTINA / An encounter of archaeologies: rescues and study of collections of the Late Period beginning (ca. XI-XIII centuries

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    Valeria Palamarczuk

    2015-12-01

    Full Text Available Se expone una estrategia de trabajo en la que convergen dos líneas de la práctica arqueológica actual: los rescates arqueológicos y el estudio de colecciones de museos. Luego de una breve presentación de la categoría arqueológica “Hualfín”, se presentan tres rescates de entierros en “urnas Hualfín”, realizados en el marco de estudios de impacto arqueológico en las localidades de Los Nacimientos y La Ciénaga del Medio, en el valle de Hualfín, provincia de Catamarca. Las tres urnas son comparadas, mediante un ejercicio de morfometría estadístico, con una muestra de 77 urnas “Hualfín” y “Shiquimil” relevadas en museos. Los ejemplares que componen la muestra provienen de los valles de Hualfín, Yocavil, del Cajón y Andalgalá. La comparación con la base de datos contribuye a la contextualización regional de las urnas rescatadas y a la observación de tendencias estéticas compartidas con el conjunto. Los tres fechados radiocarbónicos obtenidos por AMS permiten ubicar a los eventos funerarios entre los siglos XI y XII y aportan a la discusión sobre la cronología del conjunto.  AbstractWe present a working strategy which integrates two lines in the current archaeological practice: archaeological rescues and study of museum collections. After a brief presentation of the archaeological category "Hualfín" three burials rescues in "Hualfín urns" are presented. The rescues were carried out in the frame of archaeological impact studies made in the towns of Los Nacimientos and La Cienega del Medio, in the Hualfín valley, Catamarca province. The three urns are compared, by a statistical morphometric exercise, with a sample of 77 "Hualfín" and "Shiquimil" urns registered in museums. The specimens come from the valleys of Hualfín, Yocavil, el Cajón and Andalgalá. The comparison with the database contributes to the regional contextualization of the three findings and to the observation of aesthetic trends shared with

  14. Multisite Semiautomated Clinical Data Repository for Duplication 15q Syndrome: Study Protocol and Early Uses.

    Science.gov (United States)

    Ajayi, Oluwaseun Jessica; Smith, Ebony Jeannae; Viangteeravat, Teeradache; Huang, Eunice Y; Nagisetty, Naga Satya V Rao; Urraca, Nora; Lusk, Laina; Finucane, Brenda; Arkilo, Dimitrios; Young, Jennifer; Jeste, Shafali; Thibert, Ronald; Reiter, Lawrence T

    2017-10-18

    , Eunice Y Huang, Naga Satya V Rao Nagisetty, Nora Urraca, Laina Lusk, Brenda Finucane, Dimitrios Arkilo, Jennifer Young, Shafali Jeste, Ronald Thibert, The Dup15q Alliance, Lawrence T Reiter. Originally published in JMIR Research Protocols (http://www.researchprotocols.org), 18.10.2017.

  15. Does the use of a novel self-adhesive flowable composite reduce nanoleakage?

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    Abo El Naga A

    2015-03-01

    Full Text Available Abeer Abo El Naga,1 Mohammed Yousef,1 Rasha Ramadan,2,3 Sherif Fayez Bahgat,4,5 Lana Alshawwa6 1Operative Dentistry Department, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia; 2Operative Dentistry Department, Modern Science and Arts University, Cairo, Egypt; 3Operative Dentistry Department, Dentistry Program, Batterjee Medical College, Jeddah, Saudi Arabia; 4Fixed Prosthodontics Department, Modern Science and Arts University, Cairo, Egypt; 5Fixed Prosthodontics Department, Dentistry Program, Batterjee Medical College, Jeddah, Saudi Arabia; 6Medical Education Department, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia Objective: The aim of the study reported here was to evaluate the performance of a self-adhesive flowable composite and two self-etching adhesive systems, when subjected to cyclic loading, in preventing the nanoleakage of Class V restorations. Methods: Wedge-shape Class V cavities were prepared (4×2×2 mm [length × width × depth] on the buccal surfaces of 90 sound human premolars. Cavities were divided randomly into three groups (n=30 according to the used adhesive (Xeno® V [self-etching adhesive system] and BOND-1® SF (solvent-free self-etching adhesive system in conjunction with Artiste® Nano Composite resin, and Fusio™ Liquid Dentin (self-adhesive flowable composite, consecutively. Each group was further divided into three subgroups (n=10: (A control, (B subjected to occlusal cyclic loading (90N for 5,000 cycles, and (C subjected to occlusal cyclic loading (90N for 10,000 cycles. Teeth then were coated with nail polish up to 1 mm from the interface, immersed in 50% silver nitrate solution for 24 hours and tested for nanoleakage using the environmental scanning electron microscopy and energy dispersive analysis X-ray analysis. Data were statistically analyzed using two-way analysis of variance and Tukey's post hoc tests (P≤0.05. Results: The Fusio Liquid Dentin group showed

  16. DIVERSIFIKASI OLAHAN BERBASIS IKAN PATIN DI DESA JINGAH HABANG HILIR KECAMATAN KARANG INTAN KABUPATEN BANJAR KALIMANTAN SELATAN

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    Purnomo Purnomo

    2016-06-01

    Full Text Available Alih teknologi pengolahan dalam rangka diversifikasi  produk olahan berbasis ikan patin di Kabupaten Banjar masih sangat dibutuhkan untuk memperkenalkan pada para pengolah dan konsumen mengenai jenis-jenis produk olahan siap saji. Diversifikasi olahan ikan patin dapat meningkatkan nilai tambah dan sekaligus meningkatkan perekonomian masyarakat perikanan di Desa Jingah Habang Hilir. Sehingga, pemahaman tersebut dapat dijadikan sebagai suatu tindakan alternatif dalam pengolahan dan pengawetan ikan patin semi modern yang bermutu dalam mencukupi kebutuhan protein  pada saat paceklik ikan. Program peningkatan keterampilan dengan melalui penyuluhan, pelatihan dan pembinaan bagi masyarakat tersebut ternyata harus sesuai dengan kebutuhan dan karakteristik masyarakat itu sendiri sebagai pelaku usaha bukanlah hal yang mudah. Sekalipun khalayak sasaran sebagai mitra kerja sudah terbiasa memanfaatkan ikan patin dengan variasi produk olahan ternyata hasil evaluasi sangat membutuhkan acuan, format / model dan arahan praktis untuk membuat produk siap saji seperti bakso, nugget dan kaki naga berbasis ikan patin guna pengembangan potensi sumberdaya perairan secara optimal. Instead of processing technologies in order to fish based processed products diversification catfish in Banjar Regency is still urgently needed to introduce on the processors and consumers about the kinds of products processed fast-food restaurant.  Diversification of processed fish catfish can increase the added value and the economy while increasing the Community fishery in the village of Jingah Habang Hilir with chillies downstream.  Such understanding can serve as an alternative in action processing and preserving fish quality semi modern catfish in sufficient protein needs at the time of paceklik fishes.  Skill enhancement programs through outreach, training and coaching for the community must  be in accordance with tha needs and characteristics of the community itself as

  17. Dėl indoeuropiečių „ugnies“ vardų

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    Vytautas Mažiulis

    2011-12-01

    Full Text Available ON THE INDO-EUROPEAN NAMES FOR ‘FIRE’SummaryThe Indo-Europeans used ‘fire’ in two main meanings: a ‘hearth (→ camp fire’ (‘I fire’ and b ‘lightening-thunder (→ blaze fire’ (‘II fire’. Both I.-E. fires are taboo, especially ‘II fire’; this is why it was very open to euphemism and mythologisation. It seems, that both I.-E. fire names later experienced certain contaminations in dialects, in some places reflected by ‘I fire’, and elsewhere by ‘II fire’.The archaic Lith. ugnìs (= Latv. *ugnis most likely derives from I.-E. *n̥gni-, which gave rise to b.-sl. *ungnis, turning this into b.-sl. *ugnis (> Lith. ugnìs, etc. due to the loss of the root’s nasality from alliteral dissimilation (AD. The AD rule influenced not only Baltic and Slavic words, but other Indo-European words with root alliteration.The I.-E. * n̥gni- (‘I fire’ is most likely linked with I.-E. *angli- ‘hearth (ember fire’ having the apophonic root I.-E. *ang- (> Lith. anglìs ‘coal’, etc.. They can both presuppose the ‘I fire’ synonymous heteroclit forms n̥g-i/n-and *ang-i/l-, which are derived from heteroclit I.-E. forms of non I.-E. verb. * n̥g-//*ang-.The component titi- of the Lith. (dial. compound titi-nagas and component Tit- of Lith. hydronyms quite clearly presupposes the I.-E. ‘II fire’ heteroclit *titi-, which is a derivative of the I.-E. formant *-i/n- from non I.-E. verb. *tit-, meaning ‘to gleam (to lighten’.It seems that the the above-mentioned I-E. ‘II fire’ was older than I.-E. r/n- heteroclit ‘II fire’, which due to its strong taboo was euphemistically reworked from *peHur- /*peHun- to *peHnu- (metathesis > *penu- > West Balt. *panu ‘fire’.

  18. Age determination, validation, and growth of Brazilian flathead (Percophis brasiliensis from the southwest Atlantic coastal waters (34°-41°S Determinación de edad, validación y crecimiento del pez palo (Percophis brasiliensis de aguas costeras del Atlántico sudoccidental (34°-41°S

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    Alfredo C Barretto

    2011-07-01

    Full Text Available The age and growth parameters of Brazilian flathead, Percophis brasiliensis, from the southwest Atlantic coastal waters (34°-41°S were determined for samples collected in spring (n = 853; years 1998 and 2000 and winter (n = 596; year 2004, whereas age was validated through the edge analysis of otoliths collected in 2007 (n = 1367 otoliths. The indices of precision APE, V, and D were used to test the reproducibility, between agers, of the ages determined from 845 otoliths. Maximum determined ages were 19 years for males and 15 years for females. One opaque and one translucent band are laid down per year, in the sagittal otolith. According to the APE (0.668%, V (1.121%, and D (0.647% indices, the age determination was consistent. Von Bertalanffy's growth parameters [males: spring (L∞ = 58.1 cm, k = 0.26 year-1, t0= -2.02 years, winter (L∞ = 58.7 cm, k = 0.21 year-1, t0 = -2.90 years; females: spring (L∞ = 65.2 cm, k = 0.29 year-1, t0 = -1.15 years, winter (L∞= 63.5 cm, k = 0.26 year-1, t0 = -2.01 years] were significantly different between sexes and seasons. From the first year of life, females grow faster and reach greater lengths than males of the same age due, probably, to an asynchronism in the sexual maturity.Se determinó la edad y los parámetros de crecimiento del pez palo, Percophis brasiliensis, de aguas costeras del Atlántico sudoccidental (34°-41°S en muestras obtenidas durante primavera (n = 853; años 1998 y 2000 e invierno (n = 596; año 2004, mientras que la edad fue validada mediante análisis del tipo de borde de otolitos colectados durante 2007 (n = 1367 otoliths. Los índices de precisión APE, V, y D fueron usados para probar la reproducibilidad, entre lectores, de las edades determinadas a partir de 845 otolitos. Las edades máximas determinadas fueron 19 años para machos y 15 años para hembras. Una banda opaca y una translúcida se depositan anualmente en el otolito sagitta. Los índices APE (0,668%, V (1

  19. Hydrobiological characteristics of Shark River estuary, Everglades National Park, Florida

    Science.gov (United States)

    McPherson, B.F.

    1970-01-01

    Water quality in the Shark River estuary was strongly influenced by seasonal patterns of rainfall, water level and temperature. During the rainy season (summer and early fall) the salinity in the 20-mile long estuary ranged from that of fresh water to half that of sea water while concentrations of dissolved oxygen were low, 2-5 milligrams per liter (mg/l) presumably because, among other factors, microbial activity and respiration were accelerated by high temperatures (30-33 degrees C). During the dry season (late fall through spring) the salinity ranged from 18 grams per liter (g/l) in the headwaters to 36 g/l at the Gulf during a dry year such as 1967 and from 1 to 25 g/l during a wet year such as 1969. Concentrations of dissolved oxygen increased from 2-3 mg/l in the summer of 1967 to 4-7 mg/l in the winter of 1968, and temperature decreased from an average of about 30 degrees C in summer to 20 degrees C in winter. Water level declined 5 to 10 decimeters in the headwaters during the dry season, and salinity and tidal action increased. Large amounts of submerged vegetation died in some headwater creeks at the end of the dry season, presumably killed by salinities above 3 g/l. The decaying organic matter and the decrease in photosynthesis resulted in low dissolved oxygen (1-2 mg/l). Fish died at this time probably as a result of the low dissolved oxygen. Trace elements, heavy metals and insecticides occurred in the waters of the estuary in concentrations below those indicated as harmful for aquatic life by current standards established by the Federal Water Pollution Control Administration (1968). The insecticides detected were concentrated in sediment and in various organisms. The patterns of distribution of planktonic and small nektonic animals in the estuary were related to salinity. Copepods (Arcatia tonsa, Labidocera aestiva, Pseudodiaptomus coronatus), cumaceans (Cyclaspis sp.), chaetognaths (Sagitta hispida), bay anchovies (Anchoa mitchilli), and scaled

  20. Reproductive strategy of common dentex Dentex dentex: management implications

    Directory of Open Access Journals (Sweden)

    A. GRAU

    2016-07-01

    Full Text Available Common dentex Dentex dentex is an iconic endangered species in the Mediterranean where is a sought after target species for small-scale, recreational and spearfishing fisheries. The reproductive biology of D. dentex in the natural environment is poorly known; therefore the reproductive strategy of the species was assessed by combining reproductive traits with the growth characteristics (estimated from length-at-age data, the size/age of sexual maturity and the energetic dynamics. A total of 358 wild fish were sampled on Mallorca Island (W Mediterranean from March 1996 to June 1999 with a 19 to 84.7 cm total length (LT range. The sex ratio was skewed towards females (1.361 albeit the length composition was not different between sexes (p = 0.551. Three young immature individuals (< 28 cm LT, 0.8% individuals were rudimentary hermaphrodites supporting the late gonochoristic species classification. The age composition determined from sagitta otolith interpretation ranged from 0 to 26 years (yr. Concerning growth, between sex differences in von Bertalanffy parameters were not relevant, even after accounting for potential between-year differences. The most noticeable difference was found for L∞ (64.7 cm for females versus 61.6 for males but even in this case, the bayesian credibility interval of between-sex differences included zero.  Maturity ogives at size and age showed that females achieved 50% maturity at 34.9 cm LT and 3.3 years, while males did at 33.8 cm LT and 2.5 years. The onset of gonad developing phase took place in December, while it progresses until April. The spawning peak was in April and May for both sexes. A generalized linear model showed that female size didn’t affect significantly the spawning season, whilst there was a strong seasonality in the spawning. Most of the evidences showed that fecundity is likely determinate, with an asynchronous oocyte development before spawning and a clear ovarian bimodal organization after

  1. Determinação de idades e crescimento do linguado branco Paralichthys patagonicus (Jordan, 1889 no sul do Brasil Age and growth of the white flounder Paralichthys patagonicus (Jordan, 1889 in southern Brazil

    Directory of Open Access Journals (Sweden)

    Júlio Neves de Araújo

    2000-01-01

    Full Text Available A idade e o crescimento do linguado-branco Paralichthys patagonicus (Jordan, 1889 foram estudados a partir de amostras obtidas da pesca comercial no sul do Brasil entre 1989 e 1991. As idades foram determinadas sobre cortes transversais de otólitos de 460 exemplares. A análise do tipo de bordo e dos incrementos marginais dos otólitos mostrou que, a cada ano ocorre a formação de uma zona translúcida e uma zona opaca nos otólitos. As "remeas atingem maiores tamanhos e idades (630 mm, 13 anos do que os machos (527 mm, 11 anos. Os parâmetros da equação de von Bertalanffy que representaram o crescimento em comprimento total das remeas foram: CT∞,= 623,0 mm, K= 0,279 e to= -0,243 anos; dos machos: CT∞,= 534,1 mm, K= 0,214 e t o = -1,589 anos e dos sexos agrupados: CT∞, = 609,1 mm, K = 0,255 to = - 0,462 anos. Os incrementos anuais em peso por idades aumentam até o final do quarto ano de vida quando a maioria já atingiu a primeira maturação sexual e ambos sexos alcançaram cerca de 30% do peso e 70% do comprimento assintóticos. Esta espécie é susceptível à sobrepesca de crescimento porque o redirecionamento do metabolismo do crescimento somático para a reprodução é gradativo e o potencial de crescimento após a maturação sexual é relativamente alto.Age and growth of the white flounder Paralichthys patagonicus (Jordan, 1889 were studied using sliced sagittae otoliths of 460 specimens collected from the commercial fishery along southem Brazil (1989 to 1991. The changes in the type of last band in formation and the marginal increments analysis showed that one translucent and one opaque zone were formed each year. Females attained larger totallength (TL and older ages (630 mm, 13 yr than males (527 mm, 11 yr. The parameters ofthe von Bertalanffy growth equations were: for females - TL∞,= 623.0 mm, K= 0.279 and t o = - 0.243 yr; for males - TL∞,= 534.1 mm, K= 0.214, to = - 1.589 yr and for pooled sexes - TL∞, = 609.1 mm

  2. Strontium content in otoliths of common fish species in the northern Baltic Sea

    Energy Technology Data Exchange (ETDEWEB)

    Lill, J-O.; Heselius, S-J. [Accelerator Laboratory, Turku PET Centre, Abo Akademi University, Turku (Finland); Himberg, M.; Hagerstand, H. [Cell Biology, Department of Biosciences, Abo Akademi University, Turku (Finland); Harju, L. [Analytical Chemistry, Department of Chemical Engineering, Abo Akademi University, Turku (Finland); Lindroos, A. [Geology and Mineralogy, Department of Natural Sciences, Abo Akademi University, Turku (Finland); Gunnelius, K.; Smâtt, J-H. [Physical Chemistry, Department of Natural Sciences, Abo Akademi University, Turku (Finland)

    2013-07-01

    Full text: The salinity of water in the northern Baltic Sea forms a gradient as it receives fresh water from several large rivers in the north and salty water by infrequent inflows of North Sea water in the south. The salinity of brackish water in the north-south direction (700 km) changes from about 3 to 7%. In an attempt to use the salinity gradient to study migration patterns, sagittae otoliths were collected from common fish species caught at different locations along the Finnish west coast. Otoliths from fishes caught in fresh-water lakes in Finland and Estonia were also included in the study for comparison. Part of the otoliths was grind and the powder was pressed to pellets which were irradiated in air with an ion beam from the Abo Akademi cyclotron and the emitted X-rays were measured. Other otoliths were embedded in epoxy and polished to reveal the ring structure. These prepared otoliths were irradiated with the ion beam to determine elemental profiles. Furthermore, XRD was applied to study the crystal structure and to identify the minerals in the otoliths. The strontium level of water is usually related to its salinity, and as the strontium ions are able to replace calcium ions in fish otoliths [1], the strontium content in fish otoliths from the same locations is expected to be very similar. However, the PIXE analyses revealed large differences in the strontium content between otoliths from different species of fish caught at the same locations. The strontium concentration in otoliths of perch and pike from the Aland Islands was about 1600 μg/g and of common whitefish 3600 μg/g. The strontium concentration in perch otoliths from the Oravais archipelago, about 400 km north of the Aland Islands, was 1400 μg/g. Corresponding concentration in otoliths of perch and pike caught in fresh-water lakes was 200 μg/g and of common whitefish from Saadjarve 400 μg/g and from Lake Inari 1000 μg/g. Otoliths of perch contained no detectable amounts of zinc (Iower

  3. Strontium content in otoliths of common fish species in the northern Baltic Sea

    International Nuclear Information System (INIS)

    Lill, J-O.; Heselius, S-J.; Himberg, M.; Hagerstand, H.; Harju, L.; Lindroos, A.; Gunnelius, K.; Smâtt, J-H.

    2013-01-01

    Full text: The salinity of water in the northern Baltic Sea forms a gradient as it receives fresh water from several large rivers in the north and salty water by infrequent inflows of North Sea water in the south. The salinity of brackish water in the north-south direction (700 km) changes from about 3 to 7%. In an attempt to use the salinity gradient to study migration patterns, sagittae otoliths were collected from common fish species caught at different locations along the Finnish west coast. Otoliths from fishes caught in fresh-water lakes in Finland and Estonia were also included in the study for comparison. Part of the otoliths was grind and the powder was pressed to pellets which were irradiated in air with an ion beam from the Abo Akademi cyclotron and the emitted X-rays were measured. Other otoliths were embedded in epoxy and polished to reveal the ring structure. These prepared otoliths were irradiated with the ion beam to determine elemental profiles. Furthermore, XRD was applied to study the crystal structure and to identify the minerals in the otoliths. The strontium level of water is usually related to its salinity, and as the strontium ions are able to replace calcium ions in fish otoliths [1], the strontium content in fish otoliths from the same locations is expected to be very similar. However, the PIXE analyses revealed large differences in the strontium content between otoliths from different species of fish caught at the same locations. The strontium concentration in otoliths of perch and pike from the Aland Islands was about 1600 μg/g and of common whitefish 3600 μg/g. The strontium concentration in perch otoliths from the Oravais archipelago, about 400 km north of the Aland Islands, was 1400 μg/g. Corresponding concentration in otoliths of perch and pike caught in fresh-water lakes was 200 μg/g and of common whitefish from Saadjarve 400 μg/g and from Lake Inari 1000 μg/g. Otoliths of perch contained no detectable amounts of zinc (Iower

  4. Measurement of the total and differential b cross sections at HERA and CMS tracker alignment at LHC

    International Nuclear Information System (INIS)

    Stefaniuk, Nazar

    2017-09-01

    This thesis is logically divided into two main parts. The first part present a ZEUS analysis which was performed on the data obtained from electron-proton collisions measured by the ZEUS detector for the 2003-2007 running period. The full HERA-II integrated luminosity of 376 pb -1 is used. The ZEUS detector is sensitive to the full phase space of beauty production, since it has cylindrical geometry, covers a wide rapidity range and was able to measure low transverse momentum muons. In this part a measurement of beauty production was studied via the process ep→e ' b anti bX→e ' μμX. Making full use of the HERA-II detector upgrade, secondary vertex information was used to constrain the beauty and charm contribution to this process. The result of this analysis is the measurement of the total, visible and differential cross sections for beauty production. The cross sections are compared to next-to-leading order QCD calculations. Similar to the beauty events, instanton or instanton-induced events involving heavy flavour can also be a source for non-isolated, both like- and unlike-sign muon pairs. In this analysis, instantons were studied with using QCDINS predictions. The data show no indication for instanton-induced events. The second part is related to CMS tracker alignment. It uses collision and cosmic data samples obtained by the CMS detector at the Large Hadron Collider in 2012. This part consists of studies of the CMS tracker alignment weak modes and a detailed study of the ''z-rescaling'' weak mode. The CMS tracker alignment weak mode study includes the simulation of the weak modes, and the alignment implementation on top of such simulation. This study shows that the alignment procedure of the CMS tracker is stable with regard to the three weak modes: ''Twist, Sagitta and Telescope'' which stand for three types of systematic shifts of the CMS tracker. The ''z-rescaling'' weak mode shows a

  5. Measurement of the total and differential b cross sections at HERA and CMS tracker alignment at LHC

    Energy Technology Data Exchange (ETDEWEB)

    Stefaniuk, Nazar

    2017-09-15

    This thesis is logically divided into two main parts. The first part present a ZEUS analysis which was performed on the data obtained from electron-proton collisions measured by the ZEUS detector for the 2003-2007 running period. The full HERA-II integrated luminosity of 376 pb{sup -1} is used. The ZEUS detector is sensitive to the full phase space of beauty production, since it has cylindrical geometry, covers a wide rapidity range and was able to measure low transverse momentum muons. In this part a measurement of beauty production was studied via the process ep→e{sup '}b anti bX→e{sup '}μμX. Making full use of the HERA-II detector upgrade, secondary vertex information was used to constrain the beauty and charm contribution to this process. The result of this analysis is the measurement of the total, visible and differential cross sections for beauty production. The cross sections are compared to next-to-leading order QCD calculations. Similar to the beauty events, instanton or instanton-induced events involving heavy flavour can also be a source for non-isolated, both like- and unlike-sign muon pairs. In this analysis, instantons were studied with using QCDINS predictions. The data show no indication for instanton-induced events. The second part is related to CMS tracker alignment. It uses collision and cosmic data samples obtained by the CMS detector at the Large Hadron Collider in 2012. This part consists of studies of the CMS tracker alignment weak modes and a detailed study of the ''z-rescaling'' weak mode. The CMS tracker alignment weak mode study includes the simulation of the weak modes, and the alignment implementation on top of such simulation. This study shows that the alignment procedure of the CMS tracker is stable with regard to the three weak modes: ''Twist, Sagitta and Telescope'' which stand for three types of systematic shifts of the CMS tracker. The ''z-rescaling'' weak

  6. [Epidemics and risk factors of plague in Junggar Basin, Xinjiang Uygur Autonomous Region, 2007-2016].

    Science.gov (United States)

    Zhang, Y J; Wang, C; Luo, T; Guo, R; Meng, W W

    2017-10-10

    Objective: To explore the epidemic situation of animal plague in Junggar Basin natural plague foci. Methods: Data on epidemics of plague and on population involved, as well as results on antibodies and pathogens, were analyzed. Samples on animals and vectors were collected from 18 counties in Junggar Basin plague natural foci between 2007 and 2016. Results: The density of Rhombomys (R.) opimus was temporally fluctuant, from 2.1/hm(2) to 22.6/hm(2) respectively. However, the spatial distribution appeared asymmetrical, with the highest seen in Kelamayi and Wumuqi-midong counties, as 14.2/hm(2) and 13.0/hm(2) respectively. Rates of capture on nocturnal rodents were from 4.2 % to 10.1 % , with the highest rate as 10.1 % in 2014. Meriones meridianus appeared the dominant species in the nocturnal community of rodents, which accounted for 81.9 % . Regarding the spatial and temporal distributions, rates of R. opimus with fleas appeared fluctuant, with an average rate as 90.7 % and the average total flea index was 10.44. In flea community of R. opimus , Xenopsylla (X.) skrjabini was found the dominant species, popular in distribution and accounted for 47.8 % . The average rate of nocturnal rodents with flea was 20.2 % , with total flea index as 1.20 and the dominant fleas were X. conformis conformis and Nosopsyllus laeviceps . A total of 13 species with 9 087 serum samples from rodents were detected as having Y. pestis antibody by IHA, with 617 positive samples. Of them, the positive rate of having R. opimus appeared the highest (9.4 % ), followed by D. sagitta (1.1 % ). Spatially, two clustered areas were found, with one in the eastern Junggar Basin from Changji to Mulei county, with the antibody positive rates of R. opimus as 14.3 % . The other one was in the central area of Junggar Basin, including Kelamayi, Shawan and Wusu counties, with the antibody positive rate as 13.6 % . The prevalence of plague on R. opimus was fluctuant, with the lowest seen in 2008, with the

  7. One sententional model with the prepositional accusativ AS proleptic subject

    Directory of Open Access Journals (Sweden)

    Antonić Ivana

    2010-01-01

    copulative-adjectival structure biti siguran (be certain, biti ubeđen (be assured and the verbs verovati (believe, misliti (think; then the verb of fictitious cognition uobražavati (imagine; the verbs of speaking pričati (talk and, used in that meaning, the verbs čuti (hear, čitati (read, then kazati (say, šuškati ‘speak quietly’ (whisper, sumnjati (doubt, nagađati (suspect; and at the end the verbs of fear: brinuti se ‘fear’ (worry, bojati se (fear, pribojavati se (have fears, plašiti se (fear, strepeti (fear for, strahovati (be apprehensive. Since with these verbs the complement proposition acquires various features when it comes to factivity, this sentential model is analyzed from that perspective, too. Finally, the paper also discusses the frequency of negative / positive characterization of the referent of the proleptic subject.

  8. Amenazas naturales asociadas al ascenso del nivel del mar en Caribe Colombiano

    Directory of Open Access Journals (Sweden)

    Robertson Kim Gregory

    2003-01-01

    án encharcamiento fuerte a inundación y 2336 Km2 presentarán encharcamiento leve a moderado. Además de numerosos áreas urbanos, la erosión litoral y/o inundación progresiva afectarán potenciahnente amplias zonas rurales y ecosistemas estratégicos como deltas, manglares y ciénagas.

  9. Puerto Rico, humedales [Puerto Rico, wetlands

    Science.gov (United States)

    Adams, D. Briane; Hefner, John M.; Dopazo, Teresa

    1999-01-01

    descanso y la alimentación de cientos de aves migratorias en ruta entre Norte y Suramérica. Antes del drenaje de los humedales costeros para propósitos agrícolas, pantanos de agua dulce como los de la Laguna Cartagena, Laguna Guánica y Ciénaga El Anegado proveían hábitat a más de 1 00 especies de aves residentes y migratorias . Los humedales de las tierras altas del área central son el último refugio de la cotorra puertorriqueña, una especie en peligro de extinción. Aún los humedales del área metropolitana de San Juan (Laguna La Torrecilla, Torrecilla Baja, Laguna de Piñones hasta Punta Vacía Talega) proveen un hábitat excelente para la vida silvestre, mantienen criaderos de peces de alto valor económico y proveen recreación y oportunidades educativas a la población urbana.Treintiocho especies de vertebrados, moluscos y crustáceos, y 46 especies de aves, algunos raros o en peligro de extinción como la mariquita, el alcatraz, el pato dominicano, el pato silbón y la paloma cabeciblanca han sido observados en el área . También las playas asociadas con estos humedales urbanos proveen sitios de anidaje para las tortugas carey de concha y tinglar, ambas en peligro de extinción (Del Llano y otros, 1986).

  10. Reseñas

    Directory of Open Access Journals (Sweden)

    HC Reseñas

    2010-02-01

    Full Text Available SÁNCHEZ PÉREZ, Francisco. Historia del Mundo Contemporáneo. Madrid, Oxford University Press España, 1999. [Selección de textos a cargo de Ana Martínez Rus]. CUENCA TORIBIO, José Manuel y MIRANDA GARCÍA, Soledad. El poder y sus hombres. ¿Por quiénes hemos sido gobernados los españoles? (1705-1998. Madrid, Actas, 1998. FORCADELL, Carlos (ed. Nacionalismo e Historia. Zaragoza, Institución "Fernando el Católico", 1998. BUTRÓN PRIDA, Gonzalo. La ocupación francesa de España (1823-1828. Cádiz, Servicio de Publicaciones de la Universidad, 1997. VEGA GEL, Leoncio (coord. Pablo Montesino y la modernización educativa en España. Instituto de Estudios Zamoranos "Florián de Ocampo" (CSIC, Diputación de Zamora, Caja España, Zamora, 1998. MORALES MUÑOZ, Manuel. El republicanismo malagueño en el siglo XIX. Propaganda doctrinal, prácticas políticas y formas de sociabilidad. Málaga, Asukaría Mediterránea, 1999. LARRÍNAGA RODRÍGUEZ, Carlos. La Liga Cantábrica y el comercio del Norte de España afínales del siglo XLX. Irún, Casino de Irún, 1999. CAYUELA FERNÁNDEZ, José G. (coord. Un siglo de España: Centenario, 1898-1998. (En colaboración con la Universidad de la Habana. Cuenca, Eds. Universidad de Castilla-La Mancha y Cortes de Castilla-La Mancha, 1998. REQUENA GALLEGO, Manuel (coord. La Guerra Civil Española y las Brigadas Internacionales. Cuenca, Universidad de Castilla-La Mancha, 1998. DE LA GRANJA, José Luis y ECHÁNIZ, José Ángel (dirs. Guernika y la guerra civil (Gernikazarra Bilduma, ns 1. Bilbao, 1998. FERNÁNDEZ SORIA, J.M. y AGULLÓ DÍAZ, M. del Carmen. Maestros valencianos bajo el franquismo. La depuración del Magisterio: 1939-1944. Valencia, Diputació de Valencia-Institució Alfons el Magnanim, 1999. YUSTA RODRIGO, Mercedes. La guerra de los vencidos. El maquis en el Maestrazgo turolense, 1940-1950. Zaragoza, Institución "Fernando el Católico", 1999. BABIANO MORA, José. Paternalismo industrial y

  11. Evaluación del proteinograma plasmático del cocodrilo cubano (Crocodylus rhombifer

    Directory of Open Access Journals (Sweden)

    Vivian Morera

    2016-09-01

    Full Text Available El cocodrilo cubano (Crocodylus rhombifer es una especie endémica de Cuba y en Peligro Crítico de extinción. Con el objetivo de preservar esta especie en la Ciénaga de Zapata, Matanzas, Cuba se mantiene una población en cautiverio. El manejo de una especie en esta categoría tiene como componente esencial el conocimiento del estado de salud de los animales en las diferentes etapas de la vida. El estudio de las proteínas plasmáticas constituye una herramienta eficaz en la clínica veterinaria para determinar la presencia de enfermedades en los cocodrilos. El objetivo de este trabajo fue evaluar el proteinograma plasmático en cuanto a la concentración total de proteínas en el plasma de Crocodylus rhombifer y a las concentraciones de sus fracciones proteicas. Las muestras se tomaron de 35 ejemplares cautivos clínicamente sanos, divididos en dos categorías: juvenil (n=20 y sub-adulto (n=15. Adicionalmente, se tomaron muestras de 8 ejemplares procedentes del medio natural. La concentración total de proteínas en el plasma se determinó mediante el método colorimétrico del ácido bicinconílico. Las proteínas del plasma fueron fraccionadas empleando electroforesis en geles de agarosa y electroforesis en gel de poliacrilamida en presencia de dodecil sulfato sódico. Mediante espectrometría de masas se identificaron las principales proteínas plasmáticas. La identificación por espectrometría de masas mostró la presencia de albúmina fosforilada en el plasma de los animales. Los valores de concentración total de proteínas y de albúmina fueron mayores en los animales cautivos que en los de medio natural, siendo más altos los de la categoría sub-adulto. Contrariamente, las γ globulinas presentaron mayores valores de concentración en los animales procedentes del medio natural. No se encontraron diferencias significativas en la concentración de las fracciones proteicas entre animales en las distintas etapas del desarrollo. En la

  12. Los ecosistemas marinos y costeros.

    Directory of Open Access Journals (Sweden)

    Comité Editorial Gestión y Ambiente

    2010-05-01

    Full Text Available Apreciado lector. Como lo habíamos anunciado, este número de la Revista Gestión y Ambiente centra su atención en los ecosistemas acuáticos continentales y el último número del año 2008 se referirá a los ecosistemas marinos y costeros. El agua es un recurso esencial para los seres vivos; se compone de hidrógeno y de oxígeno, contiene gases y nutrientes, partículas suspendidas vivas y no vivas, y físicamente, es permeada por la luz y el calor. Sólo una parte pequeña del agua del planeta es dulce. Los ríos, lagos y ciénagas del paisaje terrestre son ecosistemas donde interactúan lo vivo y lo no- vivo; y a través del agua, se mueve la materia y fluye la energía. Lo vivo está influido por el agua, pero, a su vez. el agua también lo esta por lo vivo. El agua dulce está en riesgo por la actividad del hombre quien la requiere, la usa, la contamina y la descontamina. Por ello, el conocimiento de los ambientes acuáticos es fundamental. En esta perspectiva, el agua dulce requiere ser estudiada para su aprovechamiento sostenible. Sin embargo, los niveles actuales de contaminación hacen indispensable no sólo su estudio hidrológico- biológico- ecológico, sino también el análisis de la cantidad de agua, su calidad y los procesos de saneamiento. Es igualmente fundamental la gestión del recurso hídrico, teniendo en cuenta los aspectos humanos, económicos y socio- ambientales. Por lo anterior las ciencias naturales, las ingenierías sanitaria y ambiental, y las ciencias sociales deben unir esfuerzos para estudiar los ecosistemas acuáticos con miras a su sostenibilidad, uso, reuso y protección. Además, como temas complementarios, la Revista entrega artículos que amplían temas tratados en números anteriores: • La contaminación atmosférica, con los resultados de dos investigaciones desarrollados en el Area Metropolitana del Valle de Aburra, y • La problemática de los riesgos con un

  13. Obituario. José Franciso Socarrás

    Directory of Open Access Journals (Sweden)

    Adolfo de Francisco Zea

    1995-08-01

    conciencia de las reacciones viscerales y glandulares anteriores al acto mental. Se expresa así el ilustre psicólogo: “estamos afligidos porque lloramos, irritados porque pegamos, asustados porque temblamos”.

    Ejerció su profesión por algún tiempo en Ciénaga y el educador que constituía el núcleo de su personalidad le hacía recordar: “no me aguantaba las ganas de enseñar”. Formó grupos para el estudio de la psicología educativa a través de las obras de Piaget, quien consideraba que el análisis de un proceso asimilador, ordenado en la duración de una historia individual, es el único que puede explicar el dinamismo de la inteligencia...

  14. Expanding horizons

    Directory of Open Access Journals (Sweden)

    Editor

    2009-01-01

    , isolated they need suitable media for expansion and delivery. Dr. H.N. Madhavan et al article describes the use of such a medium (Mebiol Gel for transplanting corneal limbal stem cells. Even if cells are ready for delivery, we should first have suitable animal models to test them and the article Garikipati Venkata Naga Srikanth et al is a good article describing are such animal model, that can be used to testing efficacy of stem cell. Aoyama et al article on using cell therapy for avascular osteonecrosis of femoral head reiterates the fact that stem cell therapy has a potential to cure a wide range of diseases and encourages all of us to continue in our guest to take stem cell therapy to treat hither to untreatable diseases. The article by Senthil Kumar Pazhanisamy et al highlights the fact that our current understanding of genome instabilities is limited. It is my personal opinion that with a better understanding of genome organization (which may take several years we can possibly predict the occurrence of tumorogenesis and reject such stem cells obtained at source from possible use in therapy. So that we would have no more cases of tumors post stem cell therapy Happy reading! Yours sincerely,The Editorial team.

  15. Book Reviews

    Directory of Open Access Journals (Sweden)

    Redactie KITLV

    2008-12-01

    Full Text Available Chris Ballard, Paula Brown, R. Michael Bourke, Tracy Harwood (eds; The sweet potato in Oceania; A reappraisal (Peter Boomgaard Caroline Hughes; The political economy of Cambodia’s transition, 1991-2001 (Han Ten Brummelhuis Richard Robison, Vedi Hadiz; Reorganising power in Indonesia; The politics of oligarchy in an age of markets (Marleen Dieleman Michael W. Charney; Southeast Asian warfare, 1300-1900 (Hans Hägerdal Daniel Perret, Amara Srisuchat, Sombun Thanasuk (eds; Études sur l´histoire du sultanat de Patani (Mary Somers Heidhues Joel Robbins; Becoming sinners; Christianity and moral torment in a Papua New Guinea society (Menno Hekker Mujiburrahman; Feeling threatened; Muslim-Christian relations in Indonesia’s New Order (Gerry van Klinken Marie-Odette Scalliet; De Collectie-Galestin in de Leidse Universiteitsbibliotheek (Dick van der Meij James Neil Sneddon; Colloquial Jakartan Indonesian (Don van Minde James Leach; Creative land; Place and procreation on the Rai coast of Papua New Guinea (Dianne van Oosterhout Stanley J. Ulijaszek (ed.; Population, reproduction and fertility in Melanesia (Dianne van Oosterhout Angela Hobart; Healing performances of Bali; Between darkness and light (Nathan Porath Leo Suryadinata (ed.; Admiral Zheng He and Southeast Asia (Roderich Ptak Ruth Barnes; Ostindonesien im 20. Jahrhundert; Auf den Spuren der Sammlung Ernst Vatter (Reimar Schefold Marie-Antoinette Willemsen; Een missionarisleven in brieven; Willem van Bekkum, Indië 1936-1998 (Karel Steenbrink Marie-Antoinette Willemsen; Een pionier op Flores; Jilis Verheijen (1908-1997, missionaris en onderzoeker (Karel Steenbrink Akitoshi Shimizu, Jan van Bremen (eds; Wartime Japanese anthropology in Asia and the Pacific (Fridus Steijlen Lilie Roosman; Phonetic experiments on the word and sentence prosody of Betawi Malay and Toba Batak (Uri Tadmor Jamie D. Saul; The Naga of Burma; Their festivals, customs

  16. Demografía y ecología de anidación de la iguana verde, Iguana iguana (Squamata: Iguanidae, en dos poblaciones explotadas en la Depresión Momposina, Colombia

    Directory of Open Access Journals (Sweden)

    Eliana M. Muñoz

    2003-03-01

    Full Text Available Se estudió la demografía y ecología de anidación de dos poblaciones de Iguana iguana que enfrentan explotación severa y alteración del hábitat, en la Depresión Momposina, Colombia. Los atos de transectos lineales fueron analizados con el modelo de Fourier para estimar la densidad de grupos sociales. El tamaño promedio de grupo y la densidad general de iguanas varió dentro y entre poblaciones (1.05 - 6.0 grupos/ha, y 1.5 - 13.7 iguanas/ha respectivamente. Las estimaciones de densidad fueron mucho menores que las reportadas en áreas más protegidas en Panamá y Venezuela. Las densidades de las iguanas fueron considerablemente mayores en sitios localizados a lo largo de los ríos (2.5 iguanas/grupo que en sitios en el margen de las ciénagas (1.5 iguanas/grupo, probablemente debido a diferencias en la vegetación. No hubo correlación entre las estimaciones de densidad y la de abundancia relativa (número de iguanas vistas/hora/persona, debido a diferencias en detectabilidad de los grupos de iguanas entre los sitios. La proporción sexual hallada (1:2.5 machos: hembras, es probablemente el resultado del sistema de apareamiento polígamo de esta especie, en vez de indicar un verdadero sesgo demográfico. Se monitoreó 34 nidos los cuales sufrieron poca depredación por vertebrados. Sin embargo si fueron afectados por inundaciones, pisoteo por ganado e infestación por larvas de mosca Phoridae. El tamaño de huevos por nidada en estas poblaciones fue de 29.4 menor que cualquier otro reporte de la literatura, con la excepción de las poblaciones de Iguana que habitan la isla altamente xérica de Curaçao, implicando que las hembras adultas en nuestra área son inusualmente pequeñas. Probablemente éste es el resultado de la explotación prolongada y excesiva de estas poblaciones en vez de ser una respuesta adaptativa a condiciones ambientales extremas.We studied the demography and nesting ecology of two populations of Iguana iguana that

  17. Usne u lavi

    Directory of Open Access Journals (Sweden)

    Una Krizmanić Ožegović

    2017-06-01

    usta, zatiljak, pazuha, prepone, noge, oči i dlačice, Gospodine, na rukama uredne, na bedrima neupadljive, na pazusima skrivene, na nogama zanemarene, na ušnim resicama osjetljive, na preponama… na preponama, Gospodine, izazovne dlačice… isprva su štitile, onda bile vlažne, zatim lelujave i sasvim opijene tisućama mirisa, podatne, prostituiraju se meni, mojim rukama, mojim prstima, danju finima, noću faličkima, zorom oštrima. Pola noći. Pola moje sladostrasne propasti, nagovještaja, i na neki način, Gospodine, kunem ti se, spasa. Odjednom, bît ima više smisla u tjelesnosti: tvoja svjetlost čini mi se jednakom, ali jasnijom; tijelo mi se odmara, ali leluja; oblaci su na nebu, ali bliže; vjetar ništa ne govori, ali čujem njegove prijekore. Znoj se suši dok ležim i drhtim od same sebe, putenosti, usana u lavi. Umjesto da se probudim, zaspim: tijelo mi se budi iz transa, tone u san. Prsti se povlače, nastupa mir. Prsti gube na oštrini, varci, brzini, ratnom umijeću. Poprimaju stvarnu dimenziju: samo su prsti. A ti ne govoriš ništa, Gospodine. Ležim naga, prekrivena sumnjama i urednim dlačicama. Ruke su mirne. Poravnam kosu što mi vraća srce na mjesto. Svijet je jedna jedina svijeća koja gori bez straha da će izgorjeti. Ništa ne govoriš. Možda nemaš više što dati mojim pijanim rukama.

  18. Reseñas

    Directory of Open Access Journals (Sweden)

    HC Reseñas

    2010-02-01

    Full Text Available DE LA GRATSJA, José Luis, REIG TAPIA, Alberto y MIRALLES, Ricardo (eds. Tuñón de Lara y la historiografía española. Siglo XXI. Madrid, 1999. CUENCA TORIBIO, José Manuel. Catolicismo contemporáneo de España y Europa. Encuentros y divergencias. Encuentro. Madrid, 1999. MARTÍN, Luis R (ed. Les francs-maçons dans la cité. Les cultures politiques de la Franc-maçonnerie en Europe. xixe-xxe siècle. Presses Universitaires. Rennes, 2000. CATROGA, Fernando. O Céu da Memoria. Cemitério Romántico e Culto Cívico dos Morios. Minerva. Coimbra, 1999. NARBAYEV, Nazym B. Russia and Eurasia: the Problem of the State Systems. Second Half of the Nineteenth-Early Twentieth Century. Nauka. Moscú, 1999. ESTEBAN DE VEGA, Mariano y MORALES MOYA, Antonio (eds. Los fines de siglo en España y Portugal. II Encuentro de Historia Comparada. Universidad. Jaén, 1999. BOSWELL, Laird. Rural Communism in France, 1920-1939. Cornell University Press. Ithaca y Londres, 1998. DENÉCHÈRE, Yves. La politique espagnole de la France de 1931 à 1936. Une pratique française de rapports inégaux. L'Harmattan. Paris, 1999. AYMES, Jean-René y SAIAÜN, Serge (eds. Être espagnol. Presses de la Sorbonne Nouvelle. Paris, 2000. SHUBERT, Adrian. Death and Money in the Afternoon: A History of the Spanish Bullfight. Oxford University Press. New York, 1999. RISQUES, Manel (dir., DUARTE, Ángel, RIQUER, Borja de, y ROIG ROSICH, Josep M. Historia de la Catalunya Contemporània. Portic-Biblioteca Universitaria. Barcelona, 1999. VV. AA. Clásicos sociales contemporáneos. Servicio Editorial de la Universidad del País Vasco. Bilbao, 2000. DIAZ HERNANDEZ, Onésimo. Los Marqueses de Urquijo. El apogeo de una saga poderosa y los inicios del Banco Urquijo, 1870-1931 Eunsa. Pamplona, 1999. DUARTE, Ángel. La república del emigrante. La cultura política de los españoles en Argentina (1875-1910. Milenio. Lleida, 1998. LARRÍNAGA, Carlos. Actividad económica y cambio estructural en San

  19. Pilgusadu läbi elu: Ono no Komachi tõlkimisest / Falling Like Rain through Life: Translating Ono no Komachi

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    Alari Allik

    2012-06-01

    traced back to various historical sources and commentaries on this particular poem. This becomes a key issue in understanding the nature of the authors gaze, since the meaning ‘long rain’ (naga-ame is skillfully embedded in the verb ‘to gaze’ (nagame the translator has to find ways to create a nondual experience, where the subject and the object become one in the act of gazing. Rein Raud, a trained Japanese philologist, solves this issue by talking about the vanity and the impermanence of world (mujōkan, which reinforces the traditional Buddhist reading of text (everything in this world passes away – flowers wither and women lose their beauty. In his rendering, Ono no Komachi becomes a philosopher, who understands the nature of reality and almost overcomes her attachment to beauty. Uku Masing’s theoretical commentaries on waka show that although he did not master the Japanese language, he understood that Japanese contained ‘magic words’ (nõiasõna, which should be preserved in translation. Thus he opts for pilgusadu (rain of gazes, which comes close to the ambivalent nature of the original. Uku Masing’s transla-tion reminds Burton Watson’s reading (The beauty of the flowers faded – / no one cared – / and I  w a t c h e d  m y s e l f / grow old in the world / as the long rains were falling, which outlines the vanity of the women who are constantly worried about their looks. The gaze turns back at women herself – she is constantly worried how other see her and whether they notice how she is getting older. The image of the author created by these translators is very different (the gaze of the philosopher as opposed to the gaze of the woman obsessed with beauty, but both readings are supported by the ambiguous nature of the original.Looking at different translations, we see that modern translations fall into a long line of different readings, which start with the compiler of Kokinshū Ki no Tsurayuki who envisioned Komachi as ‘beautiful sick

  20. Deathly silence and apocalyptic noise: Observations on the soundscape of the Book of the Twelve

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    Aaron Schart

    2010-03-01

    (5:18; 6:1 moprofeta o lla ka kwelabohloko go bangwalelwa ba gagwe. Go fapana le seo, mo go Nahume 3:1 le Habakuku 2: 6-19, h?y e t�welet�wa ka moya wa dikwero. Mo go Sakaria 2:10, go diri�wa h?y ya boraro e le ya lethabo. Go bonala nke dit�homi�o t�e tharo t�e t�a go fapana di nyalelana gobotse le sebopego sa Puku ya ba Lesomepedi. Sa bobedi, lelahlelwa has le lona le laet�a dit�homi�o t�a go fapana. Mo go Amosi 6:10 le 8:3, le tso�olo�a mohemo wa mafelelo wa Baisraele ge ba ehwa ka go bona go senywa ga naga. Go fapana le seo, ka go Habakuku 2:20, Tsefaya 1:7 le Sakaria 2:7, bangwalelwa ba laelwa go homola pele ga YHWH. Taelo ye e swanet�e go kwe�i�wa e le tiro ya go laet�a tlhompho. Gapegape, tatelano ya ditiragalo e nyalana gabotse le sebopego sa Puku ya ba Lesomepedi. Se maleba le go fete�i�a ke gore mabaka a mararo a mafelelo a aga freime go tiragalo ya bothop�a bja Babilonia, bjoo bo welago magareng ga Tsefanya le Hagai. Mohlala wa boraro ke sekafoko ham�nim mo go Joele 4:14. Mongwadi o diri�a sebopego sa go se tlwaelege sa bobedi mo bont�ing go laet�a lefelo le e le la modumo wa go feta yohle (�modumo wa apholiphtiki� mo go Lesomepedi.

  1. Estimating the proportion of river and sea spawning whitefish in catches from the brackish Gulf of Bothnia (Baltic Sea by gill raker counting, genotyping and otolith chemistry analysis

    Directory of Open Access Journals (Sweden)

    Henry Hägerstrand

    2015-11-01

    Full Text Available European whitefish (Coregonus lavaretus is a commercially and recreationally important species in the Gulf of Bothnia (Figure 1, where the salinity of the surface water increases from ~2 ‰ to ~6 ‰ in the north-south (~725 km direction. Two sympatric ecotypes with similar outer features occur: stationary sea spawning whitefish and migrating anadromous river spawning whitefish (Lehtonen 1981. The two types mix in sea away from breeding locations and off breeding time. River spawning whitefish can undertake long feeding and spawning migrations, e.g. between the north and the south of the gulf. The river spawning whitefish abundantly occur at feeding grounds in the south where they stay for years, until maturing. Mainly due to anthropogenic destruction of the spawning rivers, the river spawning whitefish has diminished during last decades and is presently listed among endangered species (Helcom 2013. A reliable assessment of the two ecotypes and their subpopulations is a prerequisite for taking effective actions for stock preservation. In order to compare methods for whitefish ecotype identification we undertook genotyping, otolith chemistry analysis and gill raker counting on river and sea spawning whitefish populations. Materials and methods. Whitefish to undergo spawning was sampled from rivers along the Finnish west coast (river spawners and at sea from known spawning sites close to the southern feeding grounds at the Åland Islands and the Archipelago Sea (sea spawners (Himberg et al. 2015, Figure 1. Gill rakers were counted on the left outer arch. Data on gill raker number was also collected from literature. Genetic diversity was assessed by nine microsatellite markers (Ozerov et al. 2015. Two methods were used for otolith (sagittae chemistry analysis. Otoliths were dissolved and analyzed for elemental concentrations with ICP-OES (Hägerstrand et al. 2015, or polished to the core and analyzed for core strontium concentration by PIXE

  2. Fourth Light at Paranal!

    Science.gov (United States)

    2000-09-01

    VLT YEPUN Joins ANTU, KUEYEN and MELIPAL It was a historical moment last night (September 3 - 4, 2000) in the VLT Control Room at the Paranal Observatory , after nearly 15 years of hard work. Finally, four teams of astronomers and engineers were sitting at the terminals - and each team with access to an 8.2-m telescope! From now on, the powerful "Paranal Quartet" will be observing night after night, with a combined mirror surface of more than 210 m 2. And beginning next year, some of them will be linked to form part of the unique VLT Interferometer with unparalleled sensitivity and image sharpness. YEPUN "First Light" Early in the evening, the fourth 8.2-m Unit Telescope, YEPUN , was pointed to the sky for the first time and successfully achieved "First Light". Following a few technical exposures, a series of "first light" photos was made of several astronomical objects with the VLT Test Camera. This instrument was also used for the three previous "First Light" events for ANTU ( May 1998 ), KUEYEN ( March 1999 ) and MELIPAL ( January 2000 ). These images served to evaluate provisionally the performance of the new telescope, mainly in terms of mechanical and optical quality. The ESO staff were very pleased with the results and pronounced YEPUN fit for the subsequent commissioning phase. When the name YEPUN was first given to the fourth VLT Unit Telescope, it was supposed to mean "Sirius" in the Mapuche language. However, doubts have since arisen about this translation and a detailed investigation now indicates that the correct meaning is "Venus" (as the Evening Star). For a detailed explanation, please consult the essay On the Meaning of "YEPUN" , now available at the ESO website. The first images At 21:39 hrs local time (01:39 UT), YEPUN was turned to point in the direction of a dense Milky Way field, near the border between the constellations Sagitta (The Arrow) and Aquila (The Eagle). A guide star was acquired and the active optics system quickly optimized the